Question

É uma função definida por f(×)=Sen ×+ cos ×,o valor de f(pi)+f(3 pi/2) f(pi/2 É:​

Answer 1

$f(x)=\sin(x)+\cos(x)$

$f(\pi)=\sin(\pi) +\cos(\pi) \\ f(\pi)=0+(-1)=-1$

$f(\frac{3\pi}{2})=\sin(\frac{3\pi}{2}) +</p><p>\cos(\frac{3\pi}{2})=-1+0=-1$

$f(\frac{\pi}{2})=\sin(\frac{\pi}{2})+\cos(\frac{\pi}{2})$

$f(\frac{\pi}{2}) =1+0=1$

$f(\pi)+f(\frac{3\pi}{2}). f(\frac{\pi}{2})$

$=-1-1.(1)=-1-1=-2$