find 7 dx dx 35. 36. (x - 1)Vr – 2r – 48 (2x + 1)V4x + 4x² 20³ – 70² + 70 37. OP cos 0 38. 20 – 5 OP VE dx 40. 39. dx 1+ Hint: Let u = x2. Hint: Use long division. %3D 2 42. 41. dx tan 0 + 3 do sin 0 dx VI(1 + x) 43. 44.

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