Given the following integral dx Use your knowledge about the Substitution Method to find (1) "u", (2) "du/dx", and (3) "dx" u = 7x - 4 du = 7 dx A dx = 7 du u = 7x du = 7 dx B dx = - du u = el% - 4 du 1 dx 7 du 4 dx 7x u = 7x - 4 du = 7 dx dx = du u = e* - 4 du = 7e -4 dx E) dx = du Zela - 4

Q: 14. The vectors a and b are such that |a| = 3, |b| = 5 and a. b = -14, then |a – b| = %3D A 62 B V62

A: Solution: Given vectors a and b such that a=3,  b=5 and a·b=-14

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A: We can find the integration as below.