Question 44776
f(x) = 2x + 1
y = 2x + 1
x = 2y + 1
x - 1 = 2y
0.5x - 0.5 = f^-1(x)
{{{ graph( 600, 600, -10, 10, -10, 10, 2x + 1, 0.5x - 0.5, x) }}}
f(x) = x^2 - 3
y = x^2 - 3
x = y^2 - 3
x + 3 = y^2
+- sqrt(x + 3) = f^-1(x)
{{{ graph( 600, 600, -10, 10, -10, 10, x^2 - 3, sqrt(x + 3), -sqrt(x + 3), x) }}}