Calculus Homework #12 Due 5-25

Calculate the following definite integrals

1. \int_0^3 (x^2+4x+3)dx

2. \int_0^{\frac{\pi}{4}}\sin xdx

3. \int_2^5 (x^3-\pi x^2)dx

4. \int_1^2\frac{1+y^2}{y}dy

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