Question

Найдите f(pi/2) если f(x)=x cosx

Answer 1

На верхнее не смотри)) не обрезала фотографию

Answer 2

To find f(pi/2), we simply need to substitute pi/2 for x in the expression for f(x):

f(pi/2) = (pi/2)cos(pi/2)

Now, we know that cos(pi/2) = 0, so we have:

f(pi/2) = (pi/2)(0) = 0

Therefore, f(pi/2) = 0.