Asked by Rob
If f is decreasing and f(20)=10, which of the following must be incorrect? Explain.
a. (f^-1)'(20)=-3
b. (f^-1)'(10)=12
how do i work this problem? i'm kind of confused about inverse functions.
a. (f^-1)'(20)=-3
b. (f^-1)'(10)=12
how do i work this problem? i'm kind of confused about inverse functions.
Answers
Answered by
drwls
b must be incorrect, because the inverse function f^-1(x) must be 20, not 12, when x = 10
At x = 20, the inverse function could be anything .
At x = 20, the inverse function could be anything .
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