Question

f(x) = 3-4cosx for 0 14 years ago

Answer 1

1:1 means for every 1 input, there is only 1 output

Answer 2

so how do i know this ? like how do i answer any future similar questions ?

Answer 3

One way to show that a function is 1-1 is to find the inverse. Another way is to use the horizontal line test.

Answer 4

this is the graph of the function, from 0<x<pi, if u draw a horixzontal line, it only cuts the graph at a single point