hi there hoping this finds you well can you please help me answer questions 4,8,9,10 please answer the questions thorougly as i am having a difficult time understanding. ill be grateful for any help you can provide have a great day

T. Solve 2sin'(0)-sin(0) - 1 =0 on the interval 0 5 0 5 2x. 8. Given a = 1 + i and 8 = 3 + 4i, find: (a) a + 28 (b) lap] (c) #+ 3 9. Solve 2* = 27. 10. Let 21 = 3i and 27 = 1 - 4i. (a) Evaluate 2(27 x 27) and leave your answer in polar form. (b) Sketch 2, and z, on same argand diagram . (c) Calculate the shortest angle between 21 and 22.4. The graph of another piece-wise function g(x) is given Y H N X -4 -3 -2 -1 -1 1 2 3 4 5 -2 O- i. For what value(s) of x is g(x) discontinuous and state the reason(s) ii. For what value(s) of x is g(x) non-differentiable