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Solução_Calculo_Stewart_6e

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F.<br />

TX.10<br />

3 DIFFERENTIATION RULES<br />

3.1 Derivatives of Polynomials and Exponential Functions<br />

e h − 1<br />

1. (a) e is the number such that lim =1.<br />

h→0 h<br />

(b)<br />

x<br />

2.7 x − 1<br />

x<br />

−0.001 0.9928<br />

−0.0001 0.9932<br />

0.001 0.9937<br />

0.0001 0.9933<br />

x<br />

2.8 x − 1<br />

x<br />

−0.001 1.0291<br />

−0.0001 1.0296<br />

0.001 1.0301<br />

0.0001 1.0297<br />

From the tables (to two decimal places),<br />

2.7 h − 1<br />

2.8 h − 1<br />

lim =0.99 and lim =1.03.<br />

h→0 h<br />

h→0 h<br />

Since 0.99 < 1 < 1.03, 2.7

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