- #1
UrbanXrisis
- 1,196
- 1
f(x) is 1.8 when x=1
f(x) is 0.5 when x=2.8
f(x) is 1.5 when x=1.2
what is the best estimate for the value of (f^-1)'1?
I now that f'(1) is -1.6 because of linear apporximation:
(2.8-1.2)/(.5-1.5)=1.6/-1=-1.6
so then (f^-1)'1 = 1/1.6?
f(x) is 0.5 when x=2.8
f(x) is 1.5 when x=1.2
what is the best estimate for the value of (f^-1)'1?
I now that f'(1) is -1.6 because of linear apporximation:
(2.8-1.2)/(.5-1.5)=1.6/-1=-1.6
so then (f^-1)'1 = 1/1.6?