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

(X-Y)e^x/x-y=a ->e^x/x-y=a/x-y Taking log both side we have. Log(e^x/x-y)=Loga/x-y ->x/x-y=loga-log(x-y) Now diff both side w.r.t x x-y-(1-dy/dx)x/(x-y)²=dy/dx-1/(x-y) ->-y+xdy/dx=(x-y)(dy/dx-1) ->-y+xdy/dx=xdy/dx-ydy/dx-x+y ->-y+ydy/dx+x=y ->ydy/dx+x=2y

3Thank You

ANSWER

Using properties of determinants show that (b+c)2. c2 b2 c2. (c+a)2. a2 b2. a2 (a+b)2 2ka matlab square h Prove that 2(ab+bc+ca) Prove that wala two hai

Posted by Kajal Sharma 7 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

5^y + 5^x = 5^y+x prove that dy/dx + 5^y_x = 0

Posted by Divya Sony 7 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Integration root tanx

Posted by Harsh Panchal 7 years, 2 months ago

CBSE > Class 12 > Mathematics

7 answers

Akash Rounit 7 years, 2 months ago

Only do exception or variation

0Thank You

G K 7 years, 2 months ago

Tell

1Thank You

G K 7 years, 2 months ago

Yell me in which year these Q. comes..Aisha

0Thank You

Aisha Gupta 7 years, 2 months ago

It is in cbse cyllabse and also these question has came several time in cbse exam. And it is done by same method as you have solved.

1Thank You

G K 7 years, 2 months ago

There is no simple function whose differentiation is root(tanx)....not in CBSE syllabus...

0Thank You

G K 7 years, 2 months ago

∫√(tan x) dxLet tan x = t^2⇒ sec2 x dx = 2t dt⇒ dx = [2t / (1 + t^4)]dt⇒ Integral ∫ 2t2 / (1 + t4) dt⇒ ∫[(t2 + 1) + (t2 - 1)] / (1 + t4) dt⇒ ∫(t2 + 1) / (1 + t4) dt + ∫(t2 - 1) / (1 + t4) dt⇒ ∫(1 + 1/t2 ) / (t2 + 1/t2 ) dt + ∫(1 - 1/t2 ) / (t2 + 1/t2 ) dt⇒ ∫(1 + 1/t2 )dt / [(t - 1/t)2 + 2] + ∫(1 - 1/t2)dt / [(t + 1/t)2 -2]Let t - 1/t = u for the first integral ⇒ (1 + 1/t2 )dt = duand t + 1/t = v for the 2nd integral ⇒ (1 - 1/t2 )dt = dvIntegral= ∫du/(u2 + 2) + ∫dv/(v2 - 2)= (1/√2) tan-1 (u/√2) + (1/2√2) log(v -√2)/(v + √2)l + c= (1/√2) tan-1 [(t2 - 1)/t√2] + (1/2√2) log (t2 + 1 - t√2) / t2 + 1 + t√2) + c= (1/√2) tan-1 [(tanx - 1)/(√2tan x)] + (1/2√2) log [tanx + 1 - √(2tan x)] / [tan x + 1 + √(2tan x)] + c

3Thank You

Vishwas Kheterpal 7 years, 2 months ago

Put tan x as square of t

3Thank You

ANSWER

Plzz help me......Jese 'x^2' ka integration x^3/3 hota h... ye hme pta h but there r many other examples which cant be solve simply....for ex root(sinx) , e^x^2....etc...to hme inke soln ratne padenge kya.......?...

Posted by G K 7 years, 2 months ago

CBSE > Class 12 > Mathematics

5 answers

G K 7 years, 2 months ago

I can understand..?

0Thank You

G K 7 years, 2 months ago

0Thank You

Akash Rounit 7 years, 2 months ago

I think , isse rt lo becoz same problem with me. Ok??

1Thank You

G K 7 years, 2 months ago

Yrr to hme kese pta chalega ki ye syllabus M h ya ni.......for ex. mujhe pahle ye pta ni tha ki root(sinx) ka integration ka answer simple form M h ya ni....mera kafi time waste hua....dekhne M to simple lagta h.....

2Thank You

Aisha Gupta 7 years, 2 months ago

Well I think rest ex are out of cbse syllabus but if u want to learn more then you have to concentrate on the methods and I think by solving tough question 3 to 4 times it automatically comes under memory.

0Thank You

ANSWER

Show that f(x)=tanx-4x is decresing in -π/3is less than x and x is less than π/3

Posted by Vicky Sansi 7 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Derrivative of 1/1+x^2

Posted by Mr Md Badshah 7 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Bharat Kumar 7 years, 2 months ago

- 2x/(1+x^2)^2

3Thank You

ANSWER

Per chapter of calculas weightage

Posted by Uday Uday 7 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

What is the integration of e^x^2

Posted by Jyotiprakash Kar 7 years, 2 months ago

CBSE > Class 12 > Mathematics

5 answers

G K 7 years, 2 months ago

If u r preparing for IIT or any other engineering test then Cengage is best book .....It contains whole syllabus i.e. both class 11th and 12th.....for CBSE RD Sharma.....

2Thank You

Tushar Jaryal 7 years, 2 months ago

Is whole syllabus of maths is in 5 books of cengage

0Thank You

G K 7 years, 2 months ago

Maths : Cengage and RD Sharma,... Chemistry : Pradeep's and GRB...... Physics : Cengage and SL Arora.... And off course NCERT.....

2Thank You

Tushar Jaryal 7 years, 2 months ago

Which books do you (megha) for PCM

0Thank You

G K 7 years, 2 months ago

,∫ex2dx=∑n=0∞x2n+1(2n+1)n!.......there is no elementary function that describes the antiderivative of e^x^2......not in syllabus of CBSE.....

0Thank You

ANSWER

Ch2

Posted by Yaseen Ahmed 7 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Find the equation of the normal to the curve y=x^3 +2x+6 which is parallel to the line x+14y+4=0

Posted by Simran Rasaily 7 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Integration of √sinxdx

Posted by Madhur Garg 7 years, 2 months ago

CBSE > Class 12 > Mathematics

5 answers

G K 7 years, 2 months ago

No Aakash....its not correct.....let me tell u the answer....2[summation n->o to infinite {(2n)!sinx^2n+3/2} / 4^n (n!)^2 (4n+3)] +C

0Thank You

Akash Rounit 7 years, 2 months ago

First of all , consider t= since ,then she get dt/cosx= dxnow int root of rupon cosx ,1/cosx take out and solve she get 2/3cosx since ka power 3/2then as u written here since and root of sinx Unknown that sin2x =2sinxcosx then put finally u get sin2x/3 root of sinx Got it?????????

0Thank You

Tushar Jaryal 7 years, 2 months ago

Hmm..we can little bit solve it by substituting sinx as t sq. But whole is'nt possible.

0Thank You

G K 7 years, 2 months ago

Its not in syllabus......iska ans ajib sa h......

0Thank You

Yash Gupta 7 years, 2 months ago

-cosx + c

0Thank You

ANSWER

2Tan-1(Tan A/2 Tan B/2 )=cos-1(cosA+cosB/1 + cosA cosB) prove

Posted by Nisha Yadav 7 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Sameer Kumar 7 years, 2 months ago

Proved

2Thank You

ANSWER

Find the equation of the tangent to the curve Y = cos( x + y), that are parallel to the line x + 2y =0

Posted by Pankaj Tiwari 7 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

_&667

Posted by Vaishnavi Jha 7 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

how to solve 2×3nd3×2 matrix

Posted by Avishar Singh 7 years, 2 months ago

CBSE > Class 12 > Mathematics

4 answers

Rahul Singh 7 years, 2 months ago

2×2

0Thank You

Aman Patel 7 years, 2 months ago

The resulting matrix would be of the order 2cross2

0Thank You

Akash Pathak 7 years, 2 months ago

2x2

0Thank You

Akash Pathak 7 years, 2 months ago

1Thank You

ANSWER

What is the volume of a circle

Posted by Niku Garg 7 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Rahul Singh 7 years, 2 months ago

r u mad ?

0Thank You

Abhi Shukla 7 years, 2 months ago

Circle has no volume it may be sphere which you mean to say .. volume of sphere is 4÷3pie r^3

2Thank You

ANSWER

What is equivalence relation

Posted by Ashish Kumar Singh 7 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Akash Rounit 7 years, 2 months ago

Equivalence relation contain symmetric ,transitive ,reflexive

0Thank You

ANSWER

Raman took a loan of rupees 130000 from a fianance company at the rate of 10percent per annum for 15months to purchase a motorcycle.how much amount will he pay if the interest is calculated cimpounded quarterly?

Posted by Arushi Bilgaiyan 7 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Arushi Bilgaiyan 7 years, 2 months ago

2352.55

1Thank You

ANSWER

How can we change the limit of integrals

Posted by Sapna Verma 7 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

equation of the circle with center (4,3) touching the circle x^2+y^2=1 is

Posted by Sagar Tiwari 7 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Deepak Jindal 7 years, 2 months ago

X^2+y^2+2hx+2ky+c=0 A.T.Q Put x=4 and y=3.

2Thank You

ANSWER

Define continuous function

Posted by Jeetu Sharma 7 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Prashant Saini 7 years, 2 months ago

continuous function is a function for which sufficiently small changes in the input result in arbitrarily small changes in the output. Otherwise, a function is said to be a discontinuous function. A continuous function with a continuous inverse function is called a homeomorphism

2Thank You

ANSWER

How to find adjoint (A)

Posted by Akshat Sharma 7 years, 2 months ago

CBSE > Class 12 > Mathematics

3 answers

Deepak Jindal 7 years, 2 months ago

????

0Thank You

Akshat Sharma 7 years, 2 months ago

?????

1Thank You

Deepak Jindal 7 years, 2 months ago

There is a given matrix. Then find co-factor. Then arrange in matrix form. Then you have to transpose of arrange matrix.. i.e..convert either rows to column or convert columns to rows. You will get adjoint of matrix..

4Thank You

ANSWER

Which book has more weightage book 1 or book 2

Posted by Vansh Choudhary 7 years, 2 months ago

CBSE > Class 12 > Mathematics