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

Y=x cosx dy/dx = cosx d/dx(x) +x d/dx(cosx) dy/dx = cosx + x(-sinx) dy/dx = cosx - xsinx d^2y/dx^2 = d/dx (cosx - xsinx) d^2y/dx^2 = d/dx(cosx) - d/dx(xsinx) d^2y/dx^2 = (-sinx) - {(sinx)+x(cosx)} d^2y/dx^2 = -sinx-sinx-xcosx =-(2sinx+xcosx)

3Thank You

ANSWER

A is a 3×3matrix and |A|=-2 then value of |A(adj A)| is

Posted by Abhaynarayan Pandey 4 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Tannu Rao 4 years, 2 months ago

|A(adjA)| = |A|^(n-1) = (-2)^2 = 4

0Thank You

ANSWER

Find the integeral of e2x-e-2x

Posted by Omprakash Ompraksh 4 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Anshuman Mishra 4 years, 2 months ago

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

0Thank You

ANSWER

Find the foot of the perpendicular drawn the ponit (1,2,5) to the plane r.(3i-j+k)=7

Posted by Hardik Kamboj 4 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Hardik Kamboj 4 years, 2 months ago

Solve krde bhai

0Thank You

Kshitiz Aggarwal 4 years, 2 months ago

Very easy....

1Thank You

ANSWER

integrate (sin^2x - cos^2x)/(sinx cosx)dx

Posted by Yash Dabhade 4 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Sonam Mishra 4 years, 2 months ago

Log[sec x.cosec x]+C

0Thank You

ANSWER

Integral of 1/4+x²

Posted by Ashna Ashna 4 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Itzz Aayu 4 years, 2 months ago

1/2arctan (x/2)+c

0Thank You

Suryakant Swain 4 years, 2 months ago

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

0Thank You

ANSWER

Find domain of sin^-1(1/2)-2sin^-1(1/√2)

Posted by Siddhartha Singh 4 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Jhalak Agrawal 4 years, 2 months ago

Since, Sin-¹(1/2) = π/6 And Sin-¹(1/√2) = π/4 So, the required ans is: π/6 + 2(π/4) π\6 + π/2 (π+3π)/6 4π/6 2π/3. Hence 2π/3 is the requured answer.

2Thank You

ANSWER

Show that if one of the square root of z is w then other one is -w.

Posted by Charu Panwar 4 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

prepare a grouped frequency distribution of class intervals of equal width , taking one of the class intervals as 30-40

Posted by Gowtham Rajendran 4 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

2 , 6=32 3, 6=27 4, 5= 9 5, 7 = 24 Then 6, 7 = ????.???

Posted by Shraddha ✨ 4 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Shraddha ✨ 4 years, 2 months ago

Yes , u r right . The right answer is 13

3Thank You

Sonam Mishra 4 years, 2 months ago

Answer is 13....

1Thank You

ANSWER

What is vector projection?

Posted by Suryakant Swain 4 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

_Joan_37 ... 4 years, 2 months ago

Suppose a vector AB ⃗ makes an angle θ with a given directed line l (say). ... The vector p ⃗ is called the projection vector and its magnitude I p ⃗ I is called as the projection of the vector AB ⃗ on line l.

0Thank You

ANSWER

how do i find an anti derivative of sin 2x

Posted by Joseph M Jose 4 years, 2 months ago

CBSE > Class 12 > Mathematics

4 answers

Sahildeep Singh 4 years, 2 months ago

cos2x/2

1Thank You

Suryakant Swain 4 years, 2 months ago

-cos2x/2

0Thank You

Suryakant Swain 4 years, 2 months ago

By the method of substitution.

0Thank You

Hrishabh Gupta 4 years, 2 months ago

Cos2x/2

1Thank You

ANSWER

[a b] +[a -b] [-b a] +[b a]

Posted by Abhay Bisht 4 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Please help how I start calculus part in maths ,I m very much fear of it.....

Posted by Mishti ???? 4 years, 2 months ago

CBSE > Class 12 > Mathematics

5 answers

Mishti ???? 4 years, 2 months ago

Hmm..right.. Thanks for motivating dear..? what a nice example u gave...?? Yeah ...krne ke baad hame bhe intrest aane laga hai ab to....

1Thank You

Ayush Vishwakarma?? 4 years, 2 months ago

Kr lenge

1Thank You

Ayush Vishwakarma?? 4 years, 2 months ago

Daro mt. English ka story padho deep water Tb tera dil khud bolega chl na ek baar aur kosis krte hai tum Sikh jayogii.. mai abhi 5.5 me hu. Is month me derivative ktmm or lenge.

2Thank You

Tani Jain 4 years, 2 months ago

Calculus is the most easy and interesting part of maths. First start with differentiation,for that foremost write all the rules regarding differentiation on a sheet of paper and when you would solve the questions keep that sheet in front of you, that would be a great help, you'll find it so easy

2Thank You

Yash Gupta 4 years, 2 months ago

I think u should start with differentiation. It is an interesting topic and easily understandable..

5Thank You

ANSWER

e*log*x:x integrat with rspt x

Posted by Ishwar Verma 4 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Suryakant Swain 4 years, 2 months ago

X is your ans

0Thank You

Eshu Sharma 4 years, 2 months ago

e^logx=x So , intregation of x is x^2/2

0Thank You

ANSWER

Ex 3.2 questions no. 19

Posted by Ro Cky 4 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Mishti ???? 4 years, 2 months ago

& if there is any problem in any of its step so u can ask particularly the step to me.. I will help u .. Regards.??

3Thank You

Mishti ???? 4 years, 2 months ago

Dear u may see in the NCERT solution 's given on this app. ??

1Thank You

ANSWER

d÷dx log a^x

Posted by Rajan Singh 4 years, 2 months ago

CBSE > Class 12 > Mathematics

3 answers

Suryakant Swain 4 years, 2 months ago

Sorry loga

0Thank You

Suryakant Swain 4 years, 2 months ago

Xloga

0Thank You

Tani Jain 4 years, 2 months ago

a^x log a

0Thank You

ANSWER

Is on 21 sept school open for 12

Posted by Naresh Singh Baghel 4 years, 2 months ago

CBSE > Class 12 > Mathematics

5 answers

Mishti ???? 4 years, 2 months ago

Ya it is sure dear ...but we have to wait for any new decision given by our state or district gov.because the cases of corona is going on increasing day by day... So Take care.. ??

3Thank You

Vishal Tomar 4 years, 2 months ago

0Thank You

Lalit Sihol 4 years, 2 months ago

Yes but if someone want to go to school can go

0Thank You

Mohd Afnan Nadeem 4 years, 2 months ago

Not confirmed

0Thank You

Shraddha ✨ 4 years, 2 months ago

No confirm

2Thank You

ANSWER

माथे book ka mark distribution

Posted by Priyanka Dalai 4 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Mishti ???? 4 years, 2 months ago

Dear ..u may search on Google by typing the new marking scheme 2020-2021 of maths class 12... It will help u .. Regards. ??

1Thank You

ANSWER

If R={(

Posted by Daksh Devda 4 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Mishti ???? 4 years, 2 months ago

???

0Thank You

ANSWER

integration of e^x cosec^xdx

Posted by Rohit Kumar 4 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Area of the region bounded by the curve y^2=4x,Y-axis and the line y=3 is

Posted by Rahul V Nair 4 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Find the area of smaller region bounded by the ellipse x^÷16 +y^÷25=1 And the straight line x÷5 +y÷5 =1

Posted by Aarjav Jain 4 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Ram makes a cuboid of plastic of sides 5 cm 4cm 5 cm.how many such cuboids will be need to form a cube

Posted by Komal Rajput 4 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Tannu Rao 4 years, 2 months ago

80 (4*4*5)...let the 4cm edge be placed along height, thwn we would need 4 boxes along length, 4 along breadth and 5 boxes along height so as to obtain a cube with side 20 cm which is the LCM of 4 and 5

1Thank You

ANSWER

X+9=0 Find X

Posted by Himanshu Karnwal 4 years, 2 months ago

CBSE > Class 12 > Mathematics