40 Complete the following exercises in complex arithmetic. a. Find the complex conjugate of (4 +j4), (2 –78), (-5+j2). b. Convert the following to polar form by multiplying the numerator and denominator by the complex conjugate of the denominator and then performing the cpnversion to polar coordinates: 1+l j4 4+j4 2- 8 -5+j2 c. Repeat part b but this time convert to polar coordinates before performing the division.

Problem 4: Perform the following complex number operations and give your final answer in rectangular and polar fo Remember that you are allowed to use MATLAB or your calculator for these problems. (5 points each) a) 21265 7-19+j7 b) 30260+35280-70/130 -20260 10 c) + (8-16)(2+14) 20-j45 d) 12 + (8220)x(5-j10)