[SOLVED] easy complex number questions
hi, could someone check the answers of these for me? btw, the book says that they are all wrong. i dont understand why.
1. If z = 2 + i, evaluate:
a) 3z = 6 + 3i
2. Solve for z; expressing answers in the form a + ib
b) Totally clueless about this one:
Solve for x.
I got 3i/2. but the answer is -3i/2. I dont get why.
[SOLVED] solving complex number equation
Solve for z.
I tried it but nothing gets rid of the z.. could someone give me a hint? I multiplied by 2 + i on both sides, but that didn't work. did a whole lot of algebra bashing, but nothing gets rid of the 2z on the left hand side.
Originally Posted by mathaddict