Welcome to Westonci.ca, where curiosity meets expertise. Ask any question and receive fast, accurate answers from our knowledgeable community. Explore a wealth of knowledge from professionals across various disciplines on our comprehensive Q&A platform. Experience the convenience of finding accurate answers to your questions from knowledgeable experts on our platform.

Let f(x) = 2x + 2. Solve f-1(x) when x = 4.

Sagot :

[tex]f(x)=2x+2 \\\\ f(x)-1= (2*4+2)-1 \\\\ =8+2-1= \\\\ =10-1= \\\\=\boxed{9}[/tex]
luana
[tex]f(x)=2x+2\\\\ f^{-1}(x):\\ y=2x+2\\ y-2=2x\ \ \ |Divide\ by\ 2\\ \frac{y-2}{2}=x\\\\ f^{-1}(x)=\frac{x-2}{2}\\ f^{-1}(4)=\frac{4-2}{2}=1\\\\ Solution\ is\ f^{-1}(4)=1[/tex]