" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
f(2x+4) = 4x²+8x-3
Mis : a = 2x+4
x = (a-4) / 2
f(a) = 4((a-4)/2)² + 8((a-4)/2) - 3
f(a) = a²-8a+16 + 4a -16 - 3
f(a) = a² - 4a - 3
f(x) = x² - 4x - 3
y = x² - 4x - 3
y+3 = x² - 4x
y+3+4 = x² - 4x + 4
y+7 = (x-2)²
x-2 = +- √(y+7)
x = √(y+7) +- 2
f⁻¹(x) = 2 +- √x+7 (E)
CMIIW :)