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

1+sinx= (cos²x/2 +sin²x/2 +2cosx/2sinx/2)=( cosx/2+sinx/2)² Canel with numerator. Tan inverse (1-tanx/2)/(1+tanx/2)= Tan inverse [ tan(pi/4-x/2)]=pi/4- x/2 ans.

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Mukan Jangra????? 6 years, 4 months ago

Cosx= cos²x/2-sinx²/2 =( cosx/2-sinx2)(cosx/2 + sinx/2) (Cosx/2+ sinx/2 ) cancel with denominator square of it Then both numerator and denominator divide by cosx/2

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Differentiation of cos (x+y)

Posted by Kalpana Jha 6 years, 4 months ago

CBSE > Class 12 > Mathematics

7 answers

Mukan Jangra????? 6 years, 3 months ago

X+y differentiate it w.rt. x

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Abhay Mehta 6 years, 3 months ago

-sin(x+y).dy/dx

2Thank You

Mukan Jangra????? 6 years, 3 months ago

Yes

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Vyshnavi T P 6 years, 4 months ago

-sin(x+y).1+dy/dx

1Thank You

Mukan Jangra????? 6 years, 4 months ago

Not -sin(x+ y) Angle ka bhi to derivative hoga

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Mukan Jangra????? 6 years, 4 months ago

-sin(x+y)d(x+y)/dx -sin(x+y)1+dy/dx

2Thank You

Reeti Verma 6 years, 4 months ago

-sin(x+y)

1Thank You

ANSWER

Integration of 1/e power x-1

Posted by Vyshnavi Nagaraj 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Question no 6,3 ka 3 ka 4 no soln of ncert seems to be wrong

Posted by Ankit Kumar 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

when will our board exam starts

Posted by Upendra Jaat 6 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Miss Mor 6 years, 3 months ago

Mere bday se...15 feb???

1Thank You

Aradhya Agarwal 6 years, 4 months ago

15 February

2Thank You

Sandeep Tyagi Sandeep Tyagi 6 years, 4 months ago

Maybe in February

2Thank You

ANSWER

Verify that (A+B)^3=A^3+B^3+3AB^2+3A^2B,where 2 3 4 1 -3 5 A=3 4 5 , B= 0 2 4 4 5 6 3 0 5

Posted by Joshnitha Py 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Integretion of 1/ x1/2+x1/3dx

Posted by Gaurav Sharma 6 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Sandeep Tyagi Sandeep Tyagi 6 years, 4 months ago

1/2logx +x^2/6

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ANSWER

Differentiate sin(cos(x²))with respect to x.

Posted by Pavan Dubey 6 years, 4 months ago

CBSE > Class 12 > Mathematics

4 answers

Ankit Kumar 6 years, 4 months ago

Taking cos(xsquare) as x then differentiate _ cos (cos(xsqa)* _sin(xsqa) 2x fully right

1Thank You

Khuskaran Sidhu 6 years, 4 months ago

Cos(cos x^2)[-sin x^2]2x

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Miss Mor 6 years, 4 months ago

Ur welcome

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Miss Mor 6 years, 4 months ago

Cos(cosx^2).(-sinx^2).2x =-2x.Cos(cos(x^2)).sinx^2

3Thank You

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How many total questions are there in 12 th class maths

Posted by Ankit Ranga 6 years, 4 months ago

CBSE > Class 12 > Mathematics

2 answers

Mukan Jangra????? 6 years, 4 months ago

You can solve infinte no. Of maths questions .

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Gaurav Choudhary 6 years, 4 months ago

Around infinity

3Thank You

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x.logx why we let lst function logx in this case

Posted by Ankit Shareen 6 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Lovely Dhawan 6 years, 3 months ago

Take first log nd then algebra ...means logx.x nd then apply u.v

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Sandeep Tyagi Sandeep Tyagi 6 years, 4 months ago

We can easily do integration of x and cant do integration of log x so we use ilate in integration

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Manish Kumar Shah 6 years, 4 months ago

Follow ILATE Logx means logrithm and and x means algebra. First L comes so we take logx as 1st function

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Posted by Shani Pedva 6 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Khuskaran Sidhu 6 years, 4 months ago

0Thank You

Suman Sharma 6 years, 4 months ago

1Thank You

Shani Pedva 6 years, 4 months ago

£we

1Thank You

ANSWER

What is tangent in calculus.

Posted by Supriya Kumari 6 years, 4 months ago

CBSE > Class 12 > Mathematics

2 answers

Sia ? 6 years, 4 months ago

The tangent line to a plane curve at a given point is the straight line that just touches the curve at that point.

1Thank You

Supriya Kumari 6 years, 3 months ago

The approximation of curve by small straight line, that st. Line is called tanget of that curve.

1Thank You

ANSWER

X=a(○˙+ sin○˙)&y=a(1-cos○˙)

Posted by Narainkarthi Narainkarthi 6 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Miss Mor 6 years, 4 months ago

Dx/d theta= a(1+cos theta) Dy/d theta=a(sin theta) Dy/dx= tan theta/2

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Where is sample paper of this year (2019-2020) ?

Posted by Naresh Kumar 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

dy/dx=x-y=π

Posted by Queen? ? 6 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Suman Sharma 6 years, 4 months ago

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Riti Bansal 6 years, 4 months ago

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Queen? ? 6 years, 4 months ago

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ANSWER

Sin (π/2+cos-1 1/√5)

Posted by Queen? ? 6 years, 4 months ago

CBSE > Class 12 > Mathematics

4 answers

Queen? ? 6 years, 4 months ago

Write ans 1/√5

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Miss Mor 6 years, 4 months ago

Ans. Is 1/√5 As sin(π/2 +x)= cosx Sin(π/2+cos-1 1/√5)= cos(cos-1 1/√5) And cos(cos-1 1/√5)= 1/√5

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Khuskaran Sidhu 6 years, 4 months ago

-sin 2/√5

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Riti Bansal 6 years, 4 months ago

-π/2

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Differentiate: (y-x)loge

Posted by Sohan .G 6 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Miss Mor 6 years, 4 months ago

Loge=1. (y-x)loge=y-x Dy/dx=1 Answer is 1

1Thank You

Shrishti . 6 years, 4 months ago

Dy/dx= 1/y-1/x=> x-x/xy

1Thank You

Queen? ? 6 years, 4 months ago

y-x/e

3Thank You

ANSWER

y=log e Find dy/dx

Posted by Sohan .G 6 years, 4 months ago

CBSE > Class 12 > Mathematics

4 answers

Miss Mor 6 years, 4 months ago

Answer is 0.because loge=1 y=1 and dy/dx=0

1Thank You

Sujay Paul 6 years, 4 months ago

1/e

0Thank You

Shrishti . 6 years, 4 months ago

1/e is the correct answer

2Thank You

Queen? ? 6 years, 4 months ago

1/e

2Thank You

ANSWER

how we study the integration...

Posted by Samyak Jain 6 years, 4 months ago

CBSE > Class 12 > Mathematics

5 answers

Anjali Singh 6 years, 4 months ago

Its a reverse of derivative, when you doing integration just forget about derivative

1Thank You

Shubham Kumar Gupta 6 years, 4 months ago

Do hard work......in my view integration is the easiest chapter....

0Thank You

Shrishti . 6 years, 4 months ago

As a reverse of differentiation

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Priya Dharshini ? 6 years, 4 months ago

Integration.. is one of the tough chapter.. learn all formulae.. keep it in tip of ur tongue.. practice each and every sum of ncert. Solved also.. dont miss it. Starting exercises are easy.. after 7.6 there is twist and troubles to our brain concentrate equally on everything.. i am also trying to do it.

2Thank You

Garvit Jain 6 years, 4 months ago

Go to youtube studyzee or cbsevideos or ashish kumar many tutors are there to teach u free of cost

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