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Chapter 3: Q. 3.96 (page 322)

For the function fx=2x2+4x-3, evaluate the function.

  1. f2
  2. f-3
  3. f(h)

Short Answer

Expert verified

Part (a) f2=13

Part (b)f-3=3

Part (c) fh=2h2+4h-3

Step by step solution

01

Part (a) Step 1.

Substitute x=2in fx=2x2+4x-3,

f2=222+42-3=24+8-3=8+5=13

02

Part (b) Step 1.

Substitute x=-3in localid="1644633261905" fx=2x2+4x-3,

f(-3)=2(-3)2+4(-3)-3f(-3)=18-12-3f(-3)=3

03

Part (c) Step 1.

Substitute x=hinlocalid="1644633275522" fx=2x2+4x-3,

localid="1644633469575" fh=2h2+4h-3=2h2+4h-3

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