# How do you factor #15x^3-21x^2+20x-28#?

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How do you factor #15x^3-21x^2+20x-28#?

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##### In Problems 13-36 use Theorem 7.2 to find S{f(t)}: I: J " 15. f(t) 41 10 16. f(t) = 7t + 3 17. f(t) =/ + 6t _ 3 18. f(t) = -4r? I6t + 9 19. f(t) = (t + 1)' 20. f(t) = (2t T) 21. f() = 1 + 2# 22. f(t) =/ - e-9 + 5 23. f(t) = (1 + e22 24. f(t) = (e' - e) 25. f(t) = 4t? _ 5 sin 3t 26. f(t) cos St + sin 2t 27. f(t) sinh kt 28. f(t) cosh kt 29. f(t) = elsinh ( 31. f(t) sin 2t cos 2t *32. f(t) costtCnc134. f(t) = sin / sin 2t 35. f(t) = sin ( cOS 2t [Hint: Examine sin(ti * 6).]
In Problems 13-36 use Theorem 7.2 to find S{f(t)}: I: J " 15. f(t) 41 10 16. f(t) = 7t + 3 17. f(t) =/ + 6t _ 3 18. f(t) = -4r? I6t + 9 19. f(t) = (t + 1)' 20. f(t) = (2t T) 21. f() = 1 + 2# 22. f(t) =/ - e-9 + 5 23. f(t) = (1 + e22 24. f(t) = (e' - e) 25. f(t) = 4t? _ 5 sin 3t 26. f(...
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In polar coordinates, the formula for the vertical vorticity can be written as: due 1 dur S + "e , dr 00 where r is the distance from the origin, which is where the vortex center is placed. Now consider a vortex, whose inner part (r < ro) is in solid body rotation with angular velocity n, an...
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