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Is {1,2,a,b} a set ? Explain

Posted by Nazir Ahmad Bhat 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Provide the differentiation as an chapter in ncert book instead of continuity and differentiability

Posted by Ananya Anand Gupta 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Agar mai bas ncert kar lu to kitne marks aa skte hai mere

Posted by Ayush Negi 7 years, 9 months ago

CBSE > Class 12 > Mathematics

3 answers

Vibhor Singh 7 years, 9 months ago

85-90

Saif Ansari 7 years, 9 months ago

I think 80% bro

Pooja Bora 7 years, 9 months ago

75+....but Puri solve krne parege tbhi

ANSWER

If. X power y plus g power x is equal to a power b then find uts derivative

Posted by Manthan Chaudhary 7 years, 9 months ago

CBSE > Class 12 > Mathematics

2 answers

Jas Kaur 7 years, 9 months ago

Diff. By taking log individually in each term

Saif Ansari 7 years, 9 months ago

Bhai yeh kaun se chapter ka question hai

ANSWER

If A and B are square matrices of the same order such that |A|=3 and AB=I,then find |B|.

Posted by Aman Kumar 7 years, 9 months ago

CBSE > Class 12 > Mathematics

8 answers

Pooja Bora 7 years, 9 months ago

Bcoz I is an identity matrix = 1

Pooja Bora 7 years, 9 months ago

See the page no. 128 theorem 3 ...acc to to this lABl=lAl.lBl...-> |I| =3|B|...->|B|= 1/3

Pooja Bora 7 years, 9 months ago

I think 1/3 hoga

Tamanna Yadav 7 years, 9 months ago

|B|=3,becaz B=A^-1 to jo A ka magnitude h vahi B ka rehga inverse karne se mag change ni hota

Jas Kaur 7 years, 9 months ago

No Its 1 IBI=1

Jas Kaur 7 years, 9 months ago

??

Jas Kaur 7 years, 9 months ago

Or any other ans.

Jas Kaur 7 years, 9 months ago

May be 9 is the ans.

ANSWER

NCERT examplar inverse trigonometric functions example 20

Posted by Manish Manish 7 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Pooja Bora 7 years, 9 months ago

I don't have examplar book

ANSWER

Find a vector of magnitude 9, which is perpendicular to both vectors 4i-j-3k and -2i+j-2k?

Posted by Vardhan Lucky 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

I face difficulties while solving problems from calculus... Help me plzzz... ?

Posted by Shivam Chaubey 7 years, 9 months ago

CBSE > Class 12 > Mathematics

2 answers

Jas Kaur 7 years, 9 months ago

Ya

Parru Kaur Brar 7 years, 9 months ago

i'm also facing so many problems deR

ANSWER

what can i do for maths exam nothing i prepared for it how can i passed with good marks plz pive me suggestions............???

Posted by Parru Kaur Brar 7 years, 9 months ago

CBSE > Class 12 > Mathematics

7 answers

Anuktha Anu 7 years, 9 months ago

Hy dnt prepare for jst to pass sometimes the lesson you have prepared will be hard

Parru Kaur Brar 7 years, 9 months ago

~?????

Parru Kaur Brar 7 years, 9 months ago

what r weightage chapters so i revise that chapterz only nd get passed

Parru Kaur Brar 7 years, 9 months ago

exam will be held on.......???

Harsh Baghel 7 years, 9 months ago

prepare part 1 of maths book in remaining days and LPP and Prob. also

Parru Kaur Brar 7 years, 9 months ago

in preboard i passed it by 58 marks but now i forget all

Rahul Chauhan 7 years, 9 months ago

U should do ur detrminant, integration , lp,3d u will sure pass

ANSWER

Chapter3 example

Posted by Amit Kumar Baghel 7 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Pooja Bora 7 years, 9 months ago

Which example ?

ANSWER

parametric eqⁿ of hyperbola is..pls tell

Posted by Harsh Baghel 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Sol ve for x:Cos(2sin-1x )=1/9

Posted by Saumya Awasthi 7 years, 9 months ago

CBSE > Class 12 > Mathematics

4 answers

Aparna Nair 7 years, 9 months ago

Sorry.... U r right.......... ........ Cos(2 sin-¹ x) =1/9............................. Put x/1 into the triangle..... Tan-¹ term is tan-¹x/root (x²/1-x²).................................. Cos(cos-¹ [1-(x²/1-x²)/1+(x²/1-x²)])=1/9............. We take property of tan^-1 and substitute Cos inverse in terms of it... Cos(cos-¹ (1-x²-x²/1-x²+x²)]=1/9................ 1-2x²=1/9............ that is xterm cancels in denominator and we cancel cos & cos - ¹ terms... -2x²=1/9-1................................................ -2x²=1-9/9................................................ -2x²=-8/9............................................................... 2x²=8/9............................................... X²=4/9............................................... X=2/3...............................................sorry that I gave u wrong answer... My mistake... ???

Aparna Nair 7 years, 9 months ago

OK let me do that again

Saumya Awasthi 7 years, 9 months ago

But the ans ki given 2/3

Aparna Nair 7 years, 9 months ago

Hi saumya...i don't know whether u will understand this answer but I'll try to tell u.... Cos(2 sin^-1x)= 1/9 Put sin^-1 x in a triangle and find tan^-1..it will be tan^-1 x/root (x^2 +1)... 2 tan^-1 x/root (x^2 +1)=cos^-1 [(1- (x²/x²+1)) /(1+(x²/x²+1)] When we solv it with respect to the qn... X²+1-x²/x²+1+x²=1/9 X term cancels in numerator. Then it becomes 1/2x²+1=1/9 So 2x²+1=9and 2x²=8 X²=4 X=2

ANSWER

Solve for x 3sin^-1 (2x/1+x^2)-4cos^-1(1-x^2/1+x^2)+2tan^-1(2x/1-x^-2)=Pi/3???? Plzzzz help me

Posted by Aparna Nair 7 years, 9 months ago

CBSE > Class 12 > Mathematics

10 answers

Rahul Chauhan 7 years, 9 months ago

Yah this type of q asked continuously last 3 years

Rahul Chauhan 7 years, 9 months ago

U r right u will get answer this way easily

Rahul Chauhan 7 years, 9 months ago

Very easy u would put formulae of 2 tan-1x

Aparna Nair 7 years, 9 months ago

Thnks evrybdy.... I got the answer anyway... It was just to substitute sin^-1&cos^-1terms wid 2 tan-1 and value of x is1/root 3... Try it guys... Its an important sample paper qn

Aparna Nair 7 years, 9 months ago

Thnks sidharth.... But if we put sin^-1& cos^-1 terms wid 2tan-1 x... Is that possible to find... Can u do it for me & just tell me that answer

Rahul Chauhan 7 years, 9 months ago

Using formulae of sin 2x,cos2x,and tan 2x and evalute :: formulae in 11 class math book okkkk...

Maths Topper Girl 7 years, 9 months ago

Put x= tanA

Siddharth Jain 7 years, 9 months ago

Put x=tan @

Parru Kaur Brar 7 years, 9 months ago

sry my mathematics is very nil

Aparna Nair 7 years, 9 months ago

Plzzzz tell me......

ANSWER

Find matrix A such that (2 -1) (1 0)A= (-3 4)

Posted by Satari Samad 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Where I can download Rd sharma pdf for class12

Posted by Avi M 7 years, 9 months ago

CBSE > Class 12 > Mathematics

2 answers

Parru Kaur Brar 7 years, 9 months ago

use google

Akshi K 7 years, 9 months ago

i don't think there is one

ANSWER

How can a non-comutative binary function have an inverse?? because to find inverse we apply commutative property only ??

Posted by Akshi K 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Prove that determination (1 a aa /1 b bb /1 c cc ) is =(b-c)(c-a)(a-b)

Posted by Sk B 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Yr cbse imp. Ques 3D wale ch ke 10 h is app me. Inse jyada kuch aa skta h kya btado please

Posted by Sweety Sharma 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Cos [tan^-1{Sin(cot^-1 x)}]

Posted by Sunidhi Kumari 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Sbne maths k kitne chapter revise kr liye???

Posted by Ritu Gupta 7 years, 9 months ago

CBSE > Class 12 > Mathematics

6 answers

Maths Topper Girl 7 years, 9 months ago

1st part completed

Rahul Chauhan 7 years, 9 months ago

Today my target is determinant

Parru Kaur Brar 7 years, 9 months ago

nothing

Rahul Chauhan 7 years, 9 months ago

Bhai kya kebal ncert krne chhye

Ritu Gupta 7 years, 9 months ago

Ohh my god itne saare chapters???

Baljeet Chouhan 7 years, 9 months ago

I done matrices, determined,Inverse trigo,vector,LPP,probability, half integration.

ANSWER

Consider

Posted by Mayank Payasi 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

What is important from ch relation and function

Posted by Rahul Chauhan 7 years, 9 months ago

CBSE > Class 12 > Mathematics

3 answers

Pooja Bora 7 years, 9 months ago

Binary operation Mai se commutative, associative , identity & inverse nikalne ko bhi aata h wo bhi 6 marks m.

Rahul Chauhan 7 years, 9 months ago

Only......

Riya Jain 7 years, 9 months ago

Reflective, symmetric or transitive show karne k liye aa sakta h....

ANSWER

Math 100 question solution

Posted by San Deb 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Maths ncert karu yaa rd sharma

Posted by Vaishali Sharma 7 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Pooja Bora 7 years, 9 months ago

Phale ncert kro ...bad m Rd Sharma se

ANSWER

What r imp topics of probability

Posted by Vedita Sharma 7 years, 9 months ago

CBSE > Class 12 > Mathematics

5 answers

Aparna Nair 7 years, 9 months ago

Probability distribution

Vedita Sharma 7 years, 9 months ago

??

Vedita Sharma 7 years, 9 months ago

Thank u

Pooja Bora 7 years, 9 months ago

Bayes' theorem

Riya Jain 7 years, 9 months ago

Byes theorem...

ANSWER

Will identity element and inverse exist for a binary function that is not commutative??

Posted by Akshi K 7 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Pooja Bora 7 years, 9 months ago

Yes, but inverse is depend on identity element

ANSWER

Find the Cartesian and vector equations of a line which passes through tha point (1,2,3) and is parallel to the line -x-2/1 = y+3/7 = 2z_6/3

Posted by Huma Sana 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Ex 41 , AOD

Posted by Shivanshu Verma 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Six marks question probably comes for how many chapters

Posted by Shivam Labh 7 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Tan-1 (a-b/ab+1)+tan-1(b-c/bc+1)+tan-1(c-a/ca+1)

Posted by Vikas Saini 7 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Aryan Shukla 7 years, 9 months ago

0

ANSWER

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