-3x² 2√√8-³ (a) Show that f'(x)=- for x < 2. The graph of y = f(x) is shown in Figure 9, along with the normal to the graph at x = -1. -4 -2 6 2+ Figure 9 2 4 (b) (i) Show that the normal to the graph of y = f(x) at x = -1 has the equation 2.x-y = -5.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
Problem 59E
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Question
-3.x²
2√√8-x³
(a) Show that f'(x)=-
for x < 2.
The graph of y = f(x) is shown in Figure 9, along with the normal to the graph at x = -1.
-4
-2
6
y
2-
Figure 9
f(x)
2
+x
4
(b) (i) Show that the normal to the graph of y = f(x) at x = -1 has the equation 2.x-y = -5.
Transcribed Image Text:-3.x² 2√√8-x³ (a) Show that f'(x)=- for x < 2. The graph of y = f(x) is shown in Figure 9, along with the normal to the graph at x = -1. -4 -2 6 y 2- Figure 9 f(x) 2 +x 4 (b) (i) Show that the normal to the graph of y = f(x) at x = -1 has the equation 2.x-y = -5.
(ii) State the x-intercept of the normal 2x-y = -5.
Transcribed Image Text:(ii) State the x-intercept of the normal 2x-y = -5.
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