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Use the second fundamental theorem of calculus to evaluate the following: 1 x2 + x2 tan? (4xx3) 8. d x tan? (4xx3) tan u 9. du secu - tan u f (x) dx if f (x) = Jx, x20 1, x 50 1 11. + do 1 + sin 0 1 - sin e 64 1 + Ry 5. dy 0 12. |3x + 1| dx y- + 2y 6. dy Vy + 3y2 +4 13. 1 (12x - 41 -5) dx 1 + cos- e 7. de 14. cos2 0 s2 - 4s + 3 ds 0