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

Ask questions which are clear, concise and easy to understand.

Ask Question

Integrate cos(x+a)/sin(x+b) wrt x. Please answer as soon as possible.

Posted by Parag Bentiya 6 years, 10 months ago

1 answers

Rishy Parasar 6 years, 10 months ago

Integral cos(x+a)/sin(x+b)dx= integral cos(x+a-b+b)/sin(x+b) On simplifying this we get: cos(a-b) * integral ( cot(x+b)dx)- integral (sin(a-b)dx). This in integration gives: cos(a-b)log|sin(x+b)|-xsun(a-b)+c.

2Thank You

ANSWER

10 to the power x + 10 to the power 6=10

Posted by Raju Raj 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Parag Bentiya 6 years, 10 months ago

Comparing powers of LHS & RHS. Wkt a to the power m to the powern is equals to a to the power mn . Therefore 6x+60=1 Hence x= -59/6

0Thank You

ANSWER

(Cos2x + 2sin^2x) / cos^2x

Posted by Kashish Malhotra 6 years, 10 months ago

CBSE > Class 12 > Mathematics

2 answers

Rishy Parasar 6 years, 10 months ago

This can be written as (1-2sin^2x+2sin^2x)/cos^2x =2sec^2x which can be integated as 2tanx+c.

1Thank You

Parag Bentiya 6 years, 10 months ago

Wkt cos2x= cos^2x-sin^2x, We get 1/cos^2x=sec^2x.

2Thank You

ANSWER

Consider the experiment of tossing a coin. if the coins shows head ,toss it again but if it shows tail, then throw a die. find the conditional probability of the event that 'the die shows a number greater than 4' given that' there is at least one tail'

Posted by Khushboo Kumari 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Which events are mutually exclusive events

Posted by Arsh Mohsin 6 years, 10 months ago

CBSE > Class 12 > Mathematics

2 answers

Deepak Jindal 6 years, 10 months ago

In which probability is same for each case... For example, a child is equally likely to born either a girl or a boy..

0Thank You

Kshitij Jain 6 years, 10 months ago

These are such events which occurs separately Like when coin is toss we can get either head or tail We can't get both of them at the same time.

0Thank You

ANSWER

Sin-1(_ √3/2)

Posted by Shruti Patil 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Preeti Takhar 6 years, 10 months ago

-pi/3

0Thank You

ANSWER

find the equations of the intersection of plane X+3y+6=0 and 3x-y-4z=0 and who's perpendicular distance from again is unity

Posted by Jitendra Choudhary 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

If x^y +y^x =a^b ,then find dy/dx

Posted by Uday Chauhan 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

The explanation is given below:

Putting x^y= u and y^x = v

∴ (i) becomes

1Thank You

ANSWER

can anyone explain if in integration questions pertaining to hyperbola or parabola appear and how to identify the vertex??

Posted by Devika Rajesh 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

What is null set

Posted by Vedprakash Dudey 6 years, 10 months ago

CBSE > Class 12 > Mathematics

2 answers

Baljit Singh 6 years, 10 months ago

0 it is empty set

0Thank You

Deepak Jindal 6 years, 10 months ago

It is also called empty set. In which it does not contain anything

0Thank You

ANSWER

Chain rule

Posted by Toffe Khale Eclairs 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Preeti Takhar 6 years, 10 months ago

Differential of function... for ex sinx^2 is cosx^2×2x×1

0Thank You

ANSWER

Maximize z=50x +15y subject to 5x+y less or =5,x +y less or =3,x and y more or =0

Posted by Kusum Rani 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

If the derivative of tan^-1(ax+b) takes the value 1 at x=0 then prove that 1+a^2=b

Posted by Nikku Prajapat 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Evaluate integral 0 to 2 e^xdx as the limit of sum

Posted by Rana Kadeeja 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

How will you integrate (1-2sin^2 x/2)

Posted by Mohammad Kashan 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Dharshika As 6 years, 10 months ago

answer is (-sin2x/4) this is done by taking (1-2sin^2 x/2) as (cos2x/2)

2Thank You

ANSWER

Planes chapters question how can solve

Posted by Gudia Khatoon 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

If a is a improper subset of b, prove that ab is a×c improper subset of b×c

Posted by Jagjot Kaur 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

how to prepare mathenatics in less time? give suggestion...

Posted by Anjali Nayak 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Sakshi Shukla 6 years, 10 months ago

Important topics ki list banao jo jyada marks ke ho unpe focus karo jese 6 marks ke questions aur daily list mein se jyada se jyada questions krte raho aur un topics ko cut kardo

2Thank You

ANSWER

।x-1। limit from 0 to 4 in this type question where we take negative sign

Posted by Ritik Ritik 6 years, 10 months ago

CBSE > Class 12 > Mathematics

2 answers

Tanuveer Singh Rathore 6 years, 10 months ago

Negative sign is taken when the result of function inside the modulus is negative for the given interval. For |x-1| we take negative sign for x=0 to x<1 (not x=1). Thus for the above interval the function would be (-(x-1))

1Thank You

Ashok Mishra 6 years, 10 months ago

0 to 1 negative sign

0Thank You

ANSWER

The monthly incomes of aryan and babban are in the ratio 3:4 and their montly expenditures are in the ratio 5:7. if each saves rs.15000 per month,find their monthly incomes using matrix method

Posted by Ritik Sharma 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Sakshi Shukla 6 years, 10 months ago

3x-5y=15000 4x-7y=15000

0Thank You

ANSWER

Find the vector eqyation of the plane with intercept 3,-5,2 on x,y,and z axes respectively

Posted by Abhishek Pathak 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

I guess the question is : Find the vector equation of the plane with intercepts 3, - 4 and 2 on x, y and. z-axis respectively.

Intercepts are (3, 0, 0), (0, -4, 0), (0,0,2)

1Thank You

ANSWER

Equation of a normal to the curve 2y=x^2 which passes through point (2,1)

Posted by Shubham Chauhan 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Sakshi Shukla 6 years, 10 months ago

2.dy/dx=2x Dy/dy=2x/2=x Y-y1=-dx/dy(x-x1) Y-1=-1/x(x-2) Xy-x=-x+2 Xy=2

0Thank You

ANSWER

Formula of skew symmetric

Posted by Harman Jeet 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

Square matrix A is said to be skew-symmetric if a_ij =−a_ji for all i and j. In other words, we can say that matrix A is said to be skew-symmetric if transpose of matrix A is equal to negative of matrix A i.e (A^T =−A). Note that all the main diagonal elements in the skew-symmetric matrix are zero. Let’s take an example of a matrix

It is skew-symmetric matrix because a_i_j =−a_ji for all i and j. Here, a₁₂ = -6 and a₂₁= -6 which means a₁₂= −a₂₁. Similarly, this condition holds true for all other values of i and j.

1Thank You

ANSWER

Under root tanx

Posted by Anuj Dagar 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Deepak Jindal 6 years, 10 months ago

Your question is not complete

0Thank You

ANSWER

Intigerate |x-1| limit 0 to 4

Posted by Vijay Vj 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Ritik Ritik 6 years, 10 months ago

Using property a to b f(x)dx = a to c f(x)dx + c to b f(x)dx where c you find x-1=0

0Thank You

ANSWER

((x^2+1)c^x)/(x+1)^2 plz solved this intregral

Posted by Shivam Dwivedi 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

x=3sint-sin3t ,y=3cost-cos3t then find d^y/d^y at t=pi/3 is it correct question? plz solved it

Posted by Shivam Dwivedi 6 years, 10 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Shot method of this question integration of log(1+cosx) limit from 0 to pi

Posted by Ritik Ritik 6 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Kartik Periwal 6 years, 10 months ago

Use formula 1+cosx=2cos^2(x/2) then log(2cos^2(x/2)= log2+2log(cos(x/2) then put x/2=t ur limit will change to 0 to π/2 then simply integrate log(cost)

3Thank You

ANSWER

(X^2+y^2)^2=xy find dy/dx

Posted by P S 6 years, 10 months ago

CBSE > Class 12 > Mathematics