Question

Find the indicated values, where g(t)=t²-t and f(x)=1+x.

f(2g(1))
A 1
B 3
C 30
D -1

Answer 1

A

Explanation:

given g(t) = t² - t and f(x) = 1 + x

To evaluate f(2g(1), evaluate g(1), multiply by 2 and use this value to evaluate f(x)

g(1) = 1² - 1 = 1 - 1 = 0 ⇒ 2g(1) = 2 × 0 = 0

f(0) = 1 + 0 = 1 → A

Answer 2

Explanation:

f(2g(1)) = f(2×0) because : g(1) = 1² - 1 = 0

f(2g(1)) = f(0) = 1+0 = 1 ......answer : A)1