Composition With Inverses...2

[nycmathguy]

Section 1.9
Questions 80, 82, 84

How is this done?

 

[MathLover1]

first find inverse for f(x) and g(x)
the do composition

 

[nycmathguy]

first find inverse for f(x) and g(x)
the do composition

Ok. Will do. Going to relax at the beach this weekend. When it's humid like it is, my joints hurt a lot.

 

[MathLover1]

Ok. Will do. Going to relax at the beach this weekend. When it's humid like it is, my joints hurt a lot.

ok, have a fun

 

[nycmathguy]

first find inverse for f(x) and g(x)
the do composition

Question 80

(g^(-1) ° f^(-1))(-3) = g inverse (f inverse (-3))

f(x) = (1/8)x - 3

f^(-1) (x) = 8x + 24

f^(-1) (-3) = 8(-3) + 24 = 0

g(x) = x^3

g^(-1) (x) = cr{x}

Note: cr = cube root

g inverse (f inverse (-3))

I know that f inverse (-3) is 0.

g inverse (0) = cr{0} = 0

Answer is 0.

Yes?

 

[MathLover1]

correct

 

[nycmathguy]

correct

Cool. What about
Composition With Inverses...1?