救命...STPM数学问题

leaderfrontier

哈哈,其实没什么拉,只是急着将问题做完,但却不会做,所以才来这里打扰大家....这是我的第一次,希望没有触犯版规..
|z|=1 and arg z=π/4
Express in a+bi form...
请问怎么做啊?

然后
z+2z*=51/(4+i)
where z* denote the complex conjugate of z.

Find the modulus and argument of the complex number z.....

Given that z^2-8z+24=0,find z in form:
a)z+bi
b)modulus-argument

希望大家可以帮帮我,谢谢

puangenlun

|z|=1 and arg z=π/4
Express in a+bi form...
请问怎么做啊?

Polar Form 写好来，然后带入计算展开即可


z+2z*=51/(4+i)
where z* denote the complex conjugate of z.
Find the modulus and argument of the complex number z.....

let z=a+bi, then substitute into the equation
compare the real & imaginary part


Given that z^2-8z+24=0,find z in form:
a)z+bi
b)modulus-argument
solve the equation by using x=(-b+-sqrt(b^2-4ac))/2a

leaderfrontier

谢谢谢谢~~
我马上做~~
谢谢哦`