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Is π rational or irrational.... What the reason behind it??

Posted by Shivangi Bhardwaj 6 years, 11 months ago

4 answers

Ashish Kumar Singh 6 years, 11 months ago

Irrational because its decimal expansion is non repeating and non terminating or you can say that it is irrational because it cannot be expressed in the form of p/q where p and q are integers and co-prime.

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Shivangi Bhardwaj 6 years, 11 months ago

But how??

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Littleshine Aaaru?? 6 years, 11 months ago

Irrational.

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_Harina_07 . 6 years, 11 months ago

Irrational

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Equation of parabola whose focus is (0,0) and directrix is the straight line 3x-4 y +2=0

Posted by Akanksha Kumari? 6 years, 11 months ago

CBSE > Class 11 > Mathematics

3 answers

Aditi Shourya 6 years, 11 months ago

S =(0,0), eq of directrix= 3x-4y+2=0 Let p (x,y) PM be the distance PM = | 3x-4y+2|/root under 3^2+(-4)^2 By def of parabola PS^2=PM^2 (x-0)^2+(y-0)^2=(3x-4y+2)^2/5^2 x^2+y^2=9x^2+16y^2+4-24xy-16y+12x Solve this u get eq of parabola

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Akanksha Kumari? 6 years, 11 months ago

Answer it pls

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Akanksha Kumari? 6 years, 11 months ago

Find the above things.

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Find equation of the parabola whose focus is (1,-1) and vertex is (2,1) also find its axis and latus rectum.

Posted by Akanksha Kumari? 6 years, 11 months ago

CBSE > Class 11 > Mathematics

2 answers

Jenil Nagrecha 6 years, 11 months ago

vertex of parabola is( 2,1) so as equation would be (y-1)^2=4a(x-2) where a is the distance between vertex and focus

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Akanksha Kumari? 6 years, 11 months ago

It's important pls answer

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cosx=√2+√2+2cos4x

Posted by Aditya Saini 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

For a positive integer n find the value of (1-i)^n (1-1/i)^n

Posted by Ishman Singh 6 years, 11 months ago

CBSE > Class 11 > Mathematics

2 answers

Gaurav Seth 6 years, 11 months ago

Solution and Explanation:

(1 – i)ⁿ(1 - 1/i)ⁿ

1Thank You

Ishman Singh 6 years, 11 months ago

Solve Re (z^2)=0,modulus of z =2

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Differentiatef(x)= [x^3+x^2+1]×1/x

Posted by Preet Singh 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

S J 6 years, 11 months ago

f(x)=x^2+x^1+x^(-1) d{f(x)}/d(x)=2x+1-x^(-2)

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A={1,2,3,4,5} B={6,7,8,9} Is f:{(1,6), (2,7), (3,8), (4,9)} a function

Posted by Abdul Wahid 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Sum to n terms of the series [1÷(1×2)]+[1÷(2×3)]+[1÷(2×4)]+.......

Posted by Rayheats Heats 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Prove that cos7x + cos5x / sin7x - sin5x =. Cotx

Posted by Arshad Shaikh 6 years, 11 months ago

CBSE > Class 11 > Mathematics

2 answers

Nabin Nabin 6 years, 11 months ago

Sol 2cos6xcosx/2cos6xsinx =cosx/sinx=cotx=RHS

1Thank You

Vaibhav Mahalwal 5 years, 9 months ago

multiply both side by 0 you get LHS=RHS ??? NO NEED FOR THANKING ME

4Thank You

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10 raise to 2n-1 +1 is divisible by 11

Posted by Aditi Singh 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

N Kansara 6 years, 11 months ago

10^(2n-1) +1 is divisible by 11. We will prove this statement by induction. For n = 1 this is true, Now we assume that it is true for n = k Therefore 10^(2k-1) + 1 = 11×t (where t is some integer. => 10^(2k-1) = 11×t - 1 ..... equation 1 For n = k + 1 LHS = 10^(2(k+1) - 1) +1 = 100×10^(2k-1) +1 From equation 1 we substitute value of 10^(2k-1), LHS = 100×(11×t - 1) +1 = 11 (100×t + 9) which is clearly a multiple of 11. Hence proved

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Using slopes determine which of the following sets of three points are collinear? a./5, -2 /7, 6/0, -2

Posted by Raghu Varan 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

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Find zeroes of polynomial 3x^2-x-10

Posted by Kavya Sharma 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Prakhar J 6 years, 11 months ago

3x^2 -x -10 ____=3x^2 -6x+5x-10 .........then 3x(x-2) +5(x-2)=0.......... .......then (3x+5) ( x-2)=0...... Therefore, roots are x= 2,(-5/3).

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How to done maths paper perfectly

Posted by Paras Surya 6 years, 11 months ago

CBSE > Class 11 > Mathematics

2 answers

Aditi Shourya 6 years, 11 months ago

Study maths effectively

0Thank You

Amit Yadav 6 years, 11 months ago

With cool mind and soul

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Find the number of word with or without meaning which can be made using all the letters of the word AGAIN if these words are written as in a dictionary what will be the 50th word?

Posted by Palak Agarwal 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Amit Yadav 6 years, 11 months ago

Total word formed is = 5!/2! = 60 answar

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Prove n/3+n/5+n9 is a natural number .

Posted by Abhishek Sehrawat 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

How i write 11lakh 11thousand 11hundred 11 in digits

Posted by Chaudhary Nikhil Panwar 6 years, 11 months ago

CBSE > Class 11 > Mathematics

2 answers

Prakhar J 6 years, 11 months ago

11,12,111

0Thank You

Prakhar J 6 years, 11 months ago

Question is wrong because we write 11 thousand as 11,000 and then 11 hundred as 1,100 both may get added

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Alpha beta gamma are the roots of eq. x³+x+1=0 then value of alpha³+beta³+gamma³ is

Posted by Anamika Sharma 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

differentiate f (x)=x^3+x^2+1/x

Posted by Harshita Verma 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Akanksha Kumari? 6 years, 11 months ago

3x+2x+(-1×) =4x

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ANSWER

how do i get 2017 18 maths question paper with solution

Posted by Sanjima Pal 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

The sum of n terms of two AP are in the ratio (7n-5):(5n+17). Show that their 6th terms are equal.

Posted by Ashish Kacktwan 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Mekunu Maitri ki behan ko pata nahi kar Pata Hoon Aur Main Radiant main change nahi kar Pata Hoon

Posted by Abhinay Chauhan 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

A person is nothing down the number of accident along a busy highway during a year specify appropriate sample space

Posted by Shreyas Muragodmath 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

22.D

Posted by Suresh Mahra 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

What is the value of cot 120° ?

Posted by Gaurav Kumar 6 years, 11 months ago

CBSE > Class 11 > Mathematics

3 answers

Chaudhary Nikhil Panwar 6 years, 11 months ago

-1/3^1/2

1Thank You

Ginnu Kumar 6 years, 11 months ago

-√3/3

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Akanksha Kumari? 6 years, 11 months ago

Cot (180-60) = cot 120= -1/3^2

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ANSWER

Sin120

Posted by Shivam Gupta 6 years, 11 months ago

CBSE > Class 11 > Mathematics

2 answers

Ginnu Kumar 6 years, 11 months ago

√3/2

0Thank You

Akanksha Kumari? 6 years, 11 months ago

Sin (180-60) =sin 120= 3^2/2

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ANSWER

Find the sum to n terms of the series 5+11+19+29+41+......

Posted by Naveen Patil 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Rising Star 6 years, 11 months ago

Sn=n÷2 (2a+(n-1)×d N%2 (10+6n-6) N÷2 (4+6n) N (2+3n)

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ANSWER

Solve by cross multiplication method - (a-b)x + (a+b)y = (a+b)(x+y) =

Posted by Rudransh Gupta 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

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Limit x-->0 cose x - cotx ÷ x

Posted by Pratham Mewada 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Samiksha Bhatia 6 years, 11 months ago

Lim x-->0( 1/sinx-cosx/sinx)÷x...by taking Lcm...u will get 1-cosx/(sinx)x....we can write 1-cosx as 2sin^2x/2.....in denominator multiply and divide by x and 4..then put the limits....u will get the answer 1/2

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Prove that Cos^2 x + Cos^2 (x+π/3) + Cos^2 (x-π/3) = 3/2

Posted by Kratos Jskfkg 6 years, 11 months ago

CBSE > Class 11 > Mathematics