Suppose you replace the dc source in coil 1 with an ac source, what changes will you observe when key is closed? give reasons. do me. (50 points)

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.