Let f(a) — a4 + 0.2a3 — 5.822— х +4, х € R. 14a. Find the solutions of f(x) > 0. 14b. For the curve y = f(x). (i) Find the coordinates of both local minimum points. (ii) Find the x-coordinates of the points of inflexion. The domain of f is now restricted to [0, a]. 14c. Write down the largest value of a for which f has an inverse. Give your answer correct to 3 significant figures. 14d. For this value of a sketch the graphs of y = f(x) and y = f-'(x) on the same set of axes, showing clearly the coordinates of the end points of each curve. 14e. Solve f-1(x) = 1. Let g(æ) = 2 sin(x –- 1) – 3, –5 +1< æ < ; +1. 14f. Find an expression for g(x), stating the domain. 14g. Solve (f-l o g)(x) < 1.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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I'm stuck on the last part of the problem (14g) which states 

Solve (f^-1)(g(x))<1

where f(x)= x^4+.2x^3-5.8x^2-x+4 and g(x) = 2sin(x-1)-1

I've included a picture also.

Let f(a) — a4 + 0.2a3 — 5.822— х +4, х € R.
14a. Find the solutions of f(x) > 0.
14b. For the curve y = f(x).
(i)
Find the coordinates of both local minimum points.
(ii)
Find the x-coordinates of the points of inflexion.
The domain of f is now restricted to [0, a].
14c. Write down the largest value of a for which f has an inverse. Give your answer
correct to 3 significant figures.
14d. For this value of a sketch the graphs of y = f(x) and y = f-'(x) on the same set of
axes, showing clearly the coordinates of the end points of each curve.
14e. Solve f-1(x) = 1.
Let g(æ) = 2 sin(x –- 1) – 3, –5 +1< æ < ; +1.
14f. Find an expression for g(x), stating the domain.
14g. Solve (f-l o g)(x) < 1.
Transcribed Image Text:Let f(a) — a4 + 0.2a3 — 5.822— х +4, х € R. 14a. Find the solutions of f(x) > 0. 14b. For the curve y = f(x). (i) Find the coordinates of both local minimum points. (ii) Find the x-coordinates of the points of inflexion. The domain of f is now restricted to [0, a]. 14c. Write down the largest value of a for which f has an inverse. Give your answer correct to 3 significant figures. 14d. For this value of a sketch the graphs of y = f(x) and y = f-'(x) on the same set of axes, showing clearly the coordinates of the end points of each curve. 14e. Solve f-1(x) = 1. Let g(æ) = 2 sin(x –- 1) – 3, –5 +1< æ < ; +1. 14f. Find an expression for g(x), stating the domain. 14g. Solve (f-l o g)(x) < 1.
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