Question

f(x) = x³ -2x²+3x-5

f [ sin 5pi/2 ] + f [ sin 3pi/2 ] =

a) 10
b) -10
c) 14
d) -14


PLEASE ANSWER ONLY IF U KNOW THE ANSWER​

Answer 1

Answer:

-14 is your answer, hope its help you

Answer 2

Step-by-step explanation:

sin 5π/2 = sin (2π + 90°) = sin 90° = 1

sin 3π/2 = sin (2π - 90°) = - sin 90° = -1

f(sin5π/2) = f(1) = 1³ - 2*1² + 3*1 - 5

=> 1 - 2 + 3 - 5 => -3

f(sin 3π/2) = f(-1) = (-1)³ - 2(-1)² + 3(-1) - 5

=> -1 - 2 - 3 - 5 => - 11

f(sin 5π/2) + f(sin 3π/2) = - 3 - 11 = - 14

option d