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Using trapezoidal rule and the table given below,

\(\mathop \smallint \limits_4^{5.2} {ln}x\ dx\) will be

X

4

4.2

4.4

4.6

4.8

5

5.2

lnx

1.39

1.44

1.48

1.53

1.57

1.61

1.65


1. 1.8277
2. 1.9284
3. 1.6424
4. 0.98795

1 Answer

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Best answer
Correct Answer - Option 1 : 1.8277

By trapezoidal rule

\(\begin{array}{l} \mathop \smallint \limits_4^{5.2} {ln}x\ dx = \frac{h}{2}\left[ {\left( {{y_0} + {y_6}} \right) + 2\left( {{y_1} + {y_2} + {y_3} + {y_4}+{y_5}} \right)} \right]\\ \Rightarrow \mathop \smallint \limits_4^{5.2} {ln}xdx = \frac{{0.2}}{2}\left[ {\left( {1.39 + 1.65} \right) + 2\left( {1.44 + 1.48 + 1.53 + 1.57 + 1.61} \right)} \right]\\ \Rightarrow \mathop \smallint \limits_4^{5.2} {ln}xdx = 1.83 \end{array}\)

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