Engineering Board Exam Reviewer · Differentials and Linear Approximation · medium
Use a linear approximation to estimate (1.98)3.
- 8.24
- 7.5
- 7.88
- 7.76
Answer
D. 7.76
Solution
Let f(x)=x3 at a=2: f(2)=8 and f'(2)=12. Then f(1.98) 8+12(-0.02)=7.76.
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