Integrate sqrt ( 4 -x^2)dx
Can anyone help me integrate :
Integral sqrt ( 4 - x^2) dx
Make a subsitution x2 = cos (theta)
Taking the derivative of both sides:
2x = - sin (theta).d(theta)
Double angle identity:
(Cosx)^2 = 1 + cos2x / 2
Can anybody give some ideas.
reading math is difficult
May be a bit out of context of the problem of discussion...but I felt a lot of inconvenience in going through the solution...as I could not read math as text...
is there no other way of posting math symbols?