firyalahmed firyalahmed

10-04-2015
Mathematics

Answered

Find f(-2) for the function:

f(x)= 3x^2-1, x<1
x+2, x> 1

Answer :

Panoyin Panoyin

11-04-2015

f(x) = 3x² - 1
f(-2) = 3(-2)² - 1
f(-2) = 3(4) - 1
f(-2) = 12 - 1
f(-2) = 11

f(x) = x < 1
f(-2) = -2 < 1

f(x) = x + 2
f(-2) = -2 + 2
f(-2) = 0

f(x) = x > 1
f(-2) = -2 > 1
f(-2) = -2 < 1

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