Find the values of a and b that make f continuous everywhere: x²-4 if x < 2 x-2 f(x) = ax? – bx + 3, if 2 3 -

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter3: Functions
Section3.3: More On Functions; Piecewise-defined Functions
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(a) Find the values of a and b that make f continuous everywhere:
x2 -4
-
if x < 2
ax? – bx + 3, if 2 <x < 3
if x > 3
x-2
f(x) =
2л — а + b,
(b) Find lim, Vx2 + ax – Vx? + bx
(c) A particle is moving along the curve whose equation is
xys
1+ y?
8.
5
Assume that the x-coordinate is decreasing at the rate of 5 units/s when the particle
is at the point (2, 1). (i) At what rate is the y-coordinate of the point changing at that
instant? (ii) Is the particle rising or falling at that instant?
Transcribed Image Text:(a) Find the values of a and b that make f continuous everywhere: x2 -4 - if x < 2 ax? – bx + 3, if 2 <x < 3 if x > 3 x-2 f(x) = 2л — а + b, (b) Find lim, Vx2 + ax – Vx? + bx (c) A particle is moving along the curve whose equation is xys 1+ y? 8. 5 Assume that the x-coordinate is decreasing at the rate of 5 units/s when the particle is at the point (2, 1). (i) At what rate is the y-coordinate of the point changing at that instant? (ii) Is the particle rising or falling at that instant?
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