Question: Evaluate the integral by making the given substitution. 1. fcos 3x dx, u=3x 2. (x(4 + x) dx, u=4+x 3. (x x + 1

Evaluate the integral by making the given substitution. 1. fcos 3x dx, u=3x 2. (x(4 + x) dx, u=4+x 3. (x x + 1 dx, u = x+1 4. j sin xdx. (1 vx 4 dx, u = x 5. (1 + 2x) dx, u 1+ 2x 6. Je cos 8 dB, u - sin 7-34 Evaluate the indefinite integral. 7. [2x(x + 3)* dx 8. (x(x + 5) dx 9. [(3x-2) dx 10. | xe da 11. f 13. (In x) X dx 3x dx 12. (2-x) dx 14. +12 11 dx

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