calculus
posted by sam .
can someone show me step by step how to evaluate the integral of 2(sinx)^2 dx
I just don't understand how to do it....

calculus 
bobpursley
Isn't there are identity
sin2x=12sin^2 x ? 
calculus 
sam
I don't understand what you are saying. there is no sin2x in my equation i don't think
i have to evaluate the integral 2(sin^2x) 
calculus 
MathMate
Try
sin(x)sin(y)=(1/2)(cos(xy)cos(x+y))
Put y=x and noting that cos(0)=1, you will have a simpler expression to integrate.
Respond to this Question
Similar Questions

math
I don't understand this calculus problem at all. can someone show me step by step? 
Calculus
Solve the IVP {y'=(sinx)y + xexp(cosx) y(0) = 1 Please show me step by step. Do I need to find out if this is exact? 
math
a rectangle is to be inscribed under the arch of the curve y = 2cosx from x=pi to x=pi. What is the length of the base of the rectangle with maximum area? 
calculus
how to i evaluate the integral of dx/ (x^2 +9) with a u substitution of x/3? 
Math
can someone sow me step by step how to evaluate the integral of the square root of x^3 using a u substitution? 
maths  trigonometry
I've asked about this same question before, and someone gave me the way to finish, which I understand to some extent. I need help figuring out what they did in the second step though. How they got to the third step from the second. … 
Physics
Can someone please show me step by step how to normalize e^5x in the interval (0, infinity)? 
Calculus
Evaluate the following integral integral 1 = a and b = 4 of sinx dx/(1+cos)^2 u = cosx du = sinx dx so from here I don't know if I can do: 1 du = sinx dx or 1/sin du = x dx 
Calculus
Can someone show me a step by step process, along with explanations on how to do this problem? 
Calculus 2
Can someone please show and explain step by step how to evaluate this integral?