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Sir, or mem , I can't study better at home , because at home time waste ,so when school open

Posted by Magan Garval 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Unique #Seraj Ali ??? 4 years, 7 months ago

1 September may be or 17 September and yaha koi teacher nahi hai yaha sab student hai ????

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What is equal set

Posted by Kritika Gupta 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 4 years, 7 months ago

Two sets A and B can be equal only if each element of set A is also the element of the set B. Also if two sets are the subsets of each other, they are said to be equal. This is represented by:

A = B

A ⊂ B and B ⊂ A ⟺ A = B

If the condition discussed above is not met, then the sets are said to be unequal. This is represented by

A ≠ B

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If we taken maths basic in 10 class and choose commerce without maths in 11 class then can we get accountancy????

Posted by Manisha Dhibar 4 years, 7 months ago

CBSE > Class 11 > Mathematics

4 answers

Manisha Dhibar 4 years, 7 months ago

But this is my friend 's question

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Manisha Dhibar 4 years, 7 months ago

Thanku guys

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Varun Mangla 4 years, 7 months ago

Yes Manisha you can get it easily...?

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Gaurav Seth 4 years, 7 months ago

Accounts is a main and Compulsory subject

With or without maths

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Guys, if we choose commerce without maths in 11 class then what are subjects we got nd will we got accountacy???

Posted by Manisha Dhibar 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Varun Mangla 4 years, 7 months ago

The subjects u would get are: 1)English 2)Business Studies 3)Economics 4)Accountancy 5)Physical education or Hindi or I.P(it will depend on ur choice)

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what is set. ? ??

Posted by Vaishali ..... 4 years, 7 months ago

CBSE > Class 11 > Mathematics

3 answers

Harman Singh 4 years, 7 months ago

Set is 1 chapter of class 11

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Naresh Gour 4 years, 7 months ago

Well defined collection of objects which not change person to person

1Thank You

Yogita Ingle 4 years, 7 months ago

Simply put, it's a collection of objects
Examples
N : the set of all natural numbers
Z : the set of all integers
Q : the set of all rational numbers
R : the set of real numbers
Z+ : the set of positive integers
Q+ : the set of positive rational numbers, and
R+ : the set of positive real numbers
Set of even numbers: {..., -4, -2, 0, 2, 4, ...}
Set of odd numbers: {..., -3, -1, 1, 3, ...}
Set of prime numbers: {2, 3, 5, 7, 11, 13, 17, ...}
Positive multiples of 3 that are less than 10: {3, 6, 9}

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HAPPY INDEPENDENCE DAY GUYS ??????????????????

Posted by Unique #Seraj Ali ??? 4 years, 7 months ago

CBSE > Class 11 > Mathematics

0 answers

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1/√8-Π7+1/√5-√6

Posted by Ahmed Raza 4 years, 7 months ago

CBSE > Class 11 > Mathematics

0 answers

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Show that the sum of (m+n)^th and (m-n)^th terms of an A.P. is equal to the twice of the m^th term

Posted by Sanchita Sharma 4 years, 7 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Show that cos4x=1-sin²x.cos²x

Posted by Infinite Voice 4 years, 7 months ago

CBSE > Class 11 > Mathematics

4 answers

Manisha Dhibar 4 years, 7 months ago

8 is missing

0Thank You

Manisha Dhibar 4 years, 7 months ago

Yes

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Sanchita Sharma 4 years, 7 months ago

LHS : cos4x=cos2(2x) =1−2sin22x =1−2(sin2x)2 =1−2(2sinxcosx)2 =1−8sin2xcos2x = RHS

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Sanchita Sharma 4 years, 7 months ago

cos4x=1-sin²x.cos²x here 8 is missing I thought

1Thank You

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What are allied angles

Posted by Anurag Rauniyar 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 4 years, 7 months ago

Trigonometric Ratios of Allied Angles

Two angles are said to be allied when their sum or difference is either zero or a multiple of 90°. The angles — θ, 90° ± θ, 180° ± θ, 270° + θ, 360° —θ etc., are angles allied to the angle θ, if θ is measured in degrees.

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Find the domain and range of of square root x minus one into 3 - x

Posted by Shavitaj Kaur 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Sanchita Sharma 4 years, 7 months ago

We have, f(x)=(x−1)(3−x) Now, Under square root the polynomial must be positive. The domain is obtained by solving:- (x−1)(3−x)≥0 You can obtain the zeroes of the polynomial (x−1)(3−x)=0 If x−1=0 x=1 If 3−x=0 ⇒x=3 So, x=1,3 So the polynomial is solved in the external intervals. x>1,x>3 So, x∈(1,+∞) Since the function f(x) is positive, due to result of square root, The range includes all positive real numbers x≥0 Hence, this is the answer.

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Is logarithm and other functions, out from ncert important for Boards?

Posted by Sairaj Killedar 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 4 years, 7 months ago

HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction for the new academic year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.

Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.

The CBSE syllabus has been rationalized keeping intact the learning outcomes so that the core concepts of students can be retained.

<font color="#FF6600"><font style="box-sizing: border-box;">Revised Curriculum for the Academic Year 2020-21</font></font>

</div> </div> <div class="panel panel-default" style="border:1px solid #dddddd; margin-bottom:0px; border-radius:4px; margin-top:5px"> <div class="panel-heading" style="border-bottom:0px #dddddd; padding:10px 15px; border-top-left-radius:3px; border-top-right-radius:3px; border-top-color:#dddddd; border-right-color:#dddddd; border-left-color:#dddddd">

<a data-toggle="collapse" href="http://cbseacademic.nic.in/Revisedcurriculum_2021.html#collapse1" style="box-sizing:border-box; color:inherit; text-decoration:none; display:block; font-weight:bold">Revised Senior Secondary Curriculum (XI-XII)</a>

</div> </div> </div>

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Ex 3.1 qn no 2

Posted by Kunal Kumar 4 years, 7 months ago

CBSE > Class 11 > Mathematics

0 answers

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solve for x :sec(π/2+A)+x sina tan(π/2+A)=cos(π/2+A)

Posted by Bhumika Singla 4 years, 7 months ago

CBSE > Class 11 > Mathematics

2 answers

Infinite Voice 4 years, 7 months ago

Your question is wrong

0Thank You

Kunal Kumar 4 years, 7 months ago

Hlo

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Find the sum of all numbers between 200 and 400 which are divisible by 4?

Posted by Bhupesh Kanwar 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Shadab Mansoori 4 years, 7 months ago

Take a=204 nth term (an) =396 d=4

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In a relation is (x,y) = (y,x)?

Posted by Garima Pundir 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Gargi Aggarwal 4 years, 7 months ago

1Thank You

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Sin3x+sin2x-sinx=4sinxcosx/2cos3x/3

Posted by Tanish Tomar 4 years, 7 months ago

CBSE > Class 11 > Mathematics

2 answers

Garima Pundir 4 years, 7 months ago

Convert sin2x- 2sinxcosx Solve sin3x-sinx

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Garima Pundir 4 years, 7 months ago

It should be cos3x/2

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Cos -25pi by 4

Posted by Nivaedithaa S 4 years, 7 months ago

CBSE > Class 11 > Mathematics

2 answers

Garima Pundir 4 years, 7 months ago

It's 1/√2

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Umang Raj 4 years, 7 months ago

-1/root2

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1^537 +i^539 + i^541 /i^534+ i^536+i^538 =

Posted by Athmapriya P 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Gargi Aggarwal 4 years, 7 months ago

i^537+i^539+i^541 =i.i^536+i.i^538+i.i^540 =i.(i^2)^268+i.(i^2)^269+i.(i^2)^270 =i.1+i.(-1)+i.1 [because (i^2)^even no.=1 and (i^2)^odd no.=-1] =i-i+i =i

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i^537 +i^539 + i^541 ___________________ = i^534 + i^536+ i^538 Please someone send the steps of the answer.

Posted by Athmapriya P 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Gargi Aggarwal 4 years, 7 months ago

i^537+i^539+i^541 =i.i^536+i.i^538+i.i^540 =i.(i^2)^268+i.(i^2)^269+i.(i^2)^270 =i.1+i.(-1)+i.1 [because (i^2)^even no.=1 and (i^2)^odd no.=-1] =i-i+i =i

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Deepak bhai ye anwer nahi hai . Koi mujhe sahi answer de do What is the value of pie /8 . Ye 3rd lesson ka example hai

Posted by Unique #Seraj Ali ??? 4 years, 7 months ago

CBSE > Class 11 > Mathematics

4 answers

Manisha Dhibar 4 years, 7 months ago

π=180°;π/8=22.5°

0Thank You

Harsh Singh 4 years, 7 months ago

22.5

0Thank You

Abhinandan Uday Mangla 4 years, 7 months ago

π = 180° So, π/8 = 22.5°

3Thank You

Gaurav Seth 4 years, 7 months ago

Solution:

Let Ф = π/8
2Ф = π/4
tan 2Ф = 1 = 2 tan Ф / [ 1 - tan² Ф ]
1 - tan² Ф = 2 tan Ф
tan² Ф + 2 tan Ф - 1 = 0
tan Ф = 1/2 [ -2 +- √(4 +4) ] = -1 +- √2
tan π/8 is > 0

Therefore, tan π/8 = √2 - 1

3Thank You

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Find the value of tan pie/8 please

Posted by Unique #Seraj Ali ??? 4 years, 7 months ago

CBSE > Class 11 > Mathematics

4 answers

Vanshika Goyal 4 years, 7 months ago

Let Ф = π/8 2Ф = π/4 tan 2Ф = 1 = 2 tan Ф / [ 1 - tan² Ф ] 1 - tan² Ф = 2 tan Ф tan² Ф + 2 tan Ф - 1 = 0 tan Ф = 1/2 [ -2 +- √(4 +4) ] = -1 +- √2 tan π/8 is > 0 Therefore, tan π/8 = √2 - 1

1Thank You

Unique #Seraj Ali ??? 4 years, 7 months ago

0Thank You

Dεερακ Ȿιηɠꜧ 4 years, 7 months ago

Tan180/8 = tan 22.5 = tan 45/2

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Unique #Seraj Ali ??? 4 years, 7 months ago

With full explanation

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1-i in polar form

Posted by Mansi Verma 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Abhinandan Uday Mangla 4 years, 7 months ago

In polar form, z= 1(Cos π/2 + i Sin π/2) Where r = 1 and ∅ = π/2(90°)

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Write the dimensions of a/b in the relation f=a√x +bt²

Posted by Aryan Kumar 4 years, 7 months ago

CBSE > Class 11 > Mathematics

0 answers

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What is the answer of i•35

Posted by Krish Joshi Joshi 4 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Anshu Singh 4 years, 7 months ago

i=√-1 So √-1*35= 35√-1 or 35i

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????What is Co-domein? ????

Posted by Shakti Singh Rajput 4 years, 7 months ago

CBSE > Class 11 > Mathematics

5 answers

S Thakur 4 years, 7 months ago

Set b

0Thank You

Aryan Kumar 4 years, 7 months ago

Co Domein is the 2nd Part

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Sujal Kadam 4 years, 7 months ago

Co-domein

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Vaishali ..... 4 years, 7 months ago

set B

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Aarohi Singh 4 years, 7 months ago

Set B ko hi co-domain kehte h

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|lx-2l -3|>1

Posted by Gauri Kumari 4 years, 7 months ago

CBSE > Class 11 > Mathematics

0 answers

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?what is complex numbers? pls ans me ???

Posted by Vaishali ..... 4 years, 7 months ago

CBSE > Class 11 > Mathematics

4 answers

Abhinandan Uday Mangla 4 years, 7 months ago

A complex number is a combination of a real and an imaginary number. Z=a+bi Here, z is the complex number, a is the real part of the number and b is the imaginary part where i (iota) = -1

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Jothi Prasath 4 years, 7 months ago

A combination of real and imaginary parts is known as complex number

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Yogita Ingle 4 years, 7 months ago

Complex Numbers Class 11 – A number that can be represented in form p + iq is defined as a complex number. [Where, p and q are real numbers and i=−1−−−√]. For a complex number z = p + iq, p is known as the real part, represented by Re z and q is known as the imaginary part represented by Im z of complex number z.