1. Evaluate the following integral ľ a. Analytically b. Numerically using: 20 20x7 + 5x5 + 15x³ + 20x dx i. A single application of trapezoidal rule. ii. Composite trapezoidal rule with n=4. Composite Simpsons' 1/3 rule with n=4 iii.

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A: Introduction :