What is the integral of sin^2(pi/2 x) ?

The integral of sin^2(pi/2 x) is 1/2 (x-1/pi sin(pix))+C

Popular >

integral of sin^2(pi/2 x)

\int sin^{2} (\frac{π}{2} x) d x

\frac{1}{2} (x - \frac{1}{π} sin (π x)) + C

Solution steps

\int sin^{2} (\frac{π}{2} x) d x

Rewrite using trig identities

= \int \frac{1}{2} (1 - cos (π x)) d x

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= \frac{1}{2} \cdot \int 1 - cos (π x) d x

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \frac{1}{2} (\int 1 d x - \int cos (π x) d x)

\int 1 d x = x

\int cos (π x) d x = \frac{1}{π} sin (π x)

= \frac{1}{2} (x - \frac{1}{π} sin (π x))

Add a constant to the solution

= \frac{1}{2} (x - \frac{1}{π} sin (π x)) + C

\int cos (\frac{π t}{12}) d t

\int (x^{2} + 1)^{4} x d x

\int \frac{1}{8 - x} d x

\int 3 t^{2} - 12 t + 9 d t

\int \frac{e ^{4 x}}{2 + e ^{4 x}} d x

What is the integral of sin^2(pi/2 x) ?
The integral of sin^2(pi/2 x) is 1/2 (x-1/pi sin(pix))+C