Question

$f(x)=x^3 - 3x + 5$ then $f \left( \sin \frac{3 \pi }{ 2} \right) + f \left( \cos \frac{3 \pi}{2} \right) =$

• A. 10
• B. 12
• C. 14
• D. 16

Answer 1

Answer: (B)

12

Answer 2

$\sin^{3} \frac{3\pi}{2 } -3 \sin \frac{3\pi}{2} +5 + \cos^{3} \frac{3\pi}{2 }+5$ = $-1 + 3 + 5 + 0 - 0 + 5 = 12$