CBSE > Class 12 > Mathematics | CBSE Board | Homework Help

1/sin^4x+cos^4x =1/1-sin^2x =sec^2x/sec^2x-tan^2x (dividing both numerator and denominator by cos^2x) Since, sec^2x=tan^2x+1 Let tan2x be t So, dt/dx=sec^2x/2 2dt=sec^2xdx so, it will come out as 2dt after putting t in place of tan2x Then after integration of 2dt U will get 2tan2x+c Please comment, if I have done something wrong in this.

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Integral of 1/x⁴+1

Posted by Blazing Math 7 years ago

CBSE > Class 12 > Mathematics

1 answers

Vishesh Kumar 7 years ago

(1/x^4 + 1) dx _1/3x^3 + x

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Prove that if chords of congurent circles subtends eqal angle at their centres then the chord are equal

Posted by Aryan Singh 7 years ago

CBSE > Class 12 > Mathematics

0 answers

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What is the total number of outcomes when a dice is rolled three times

Posted by Pavankumar Anand 7 years ago

CBSE > Class 12 > Mathematics

2 answers

Afzal Bari 7 years ago

6x6x6=216

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Ankit Kumar 7 years ago

Total number of outcome=216

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What is the definite integral of cos(x)/x²+1 from 0 to ∞

Posted by Blazing Math 7 years ago

CBSE > Class 12 > Mathematics

0 answers

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Strictly increasing or strictly decreasing

Posted by Akshat Rakhecha 7 years ago

CBSE > Class 12 > Mathematics

1 answers

Aryan Rai 7 years ago

When f'(×)>0 then it's strictly increasing function and if f'(×)<0 then it's strictly decreasing function.

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(cosx)^2dy/dx+y=tanx please solve this differential equation which is in the form of linear equation ???

Posted by Chandra Sree Gandhavarapu 7 years ago

CBSE > Class 12 > Mathematics

1 answers

Sumit Kumar 7 years ago

dy/dx+y/(cosx)^2=tanx/(cosx)^2 I.F= e^(integration of 1/(cosx)^2) =e^tanx So, y.e^tanx= integ.of tanx/(cosx)^2 . e^tanx dx + c y.e^tanx= e^tanx(tanx-1) + c So the differential eqn. Is -- y = tanx-1+ c(e^-tanx) Put tanx=t in integ.

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How i can get more mark in maths i am a student of commerce .

Posted by Sumair Sadiq 7 years ago

CBSE > Class 12 > Mathematics

0 answers

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Differentiation of xlogx raised to the power xlogx

Posted by Sanjay Singh 7 years ago

CBSE > Class 12 > Mathematics

1 answers

Sanjay Singh 7 years ago

Raised to the power log (logx) not xlogx

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How to become perfect in integration part for jee???

Posted by S M 7 years ago

CBSE > Class 12 > Mathematics

3 answers

Chandra Sree Gandhavarapu 7 years ago

Practice all the formulae thoroughly and practice many more problems on each formula

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Rajat Dhull 7 years ago

No just read with enjoyment.

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Ashish Raj 7 years ago

Just read with concentration

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Cos a - cos alpha / cos a + cos alpha. [CBSE 2008,10,14 ] .

Posted by H. S 7 years ago

CBSE > Class 12 > Mathematics

0 answers

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Let a=z*z and *be a binary operation on a defined by (a,b)*(c,d)=(ab+bc,bd) find the identity element for *in the set a.

Posted by Vinayak Shukla 7 years ago

CBSE > Class 12 > Mathematics

0 answers

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prove that cosA-sinA+1/cosA+sinA-1=sinA/1-cosA

Posted by Ritik Kumar 7 years ago

CBSE > Class 12 > Mathematics

0 answers

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How to integrate x^5/√1+x^3

Posted by S M 7 years ago

CBSE > Class 12 > Mathematics

2 answers

Deepti Choudhary 7 years ago

Write x^5 as x².x^3 now put 1+x^3= t then differentiate it w.r.t x then u have 3x²= dt/dx ..-> x²dx= dt/3...... Now,, integral . . . . . Now u have x^3= t- 1 -----> ¦ (t-1)dt/3 and Ur answer is 1/3 ( t²/2 -t) i.e, t²/6 - t/3 now put the value of t =1+x^3 Hope it helps u

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S M 7 years ago

Please someone answer my question....

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How to solve x+2y=8;3x+2y=12

Posted by Bhavishya Madhu 7 years ago

CBSE > Class 12 > Mathematics