Posted by **Kelly** on Wednesday, May 7, 2008 at 9:27pm.

I have a problem about complex number.

Let z=7e^(7*pi*i/4) .

Write z, z^4, z^7, z^(-2) in the form a + b i

I have no idea how to do it. Any hints will be appreciated.

## Answer this Question

## Related Questions

- calculus - Write the complex number in exponential form. i i is the complex ...
- Algebra 2 - Write the expression as a complex number in standard form. 3-3i/4i I...
- pre-calculus - find the complex zeros of the polynomial function. write F in the...
- Chem 100 - CHemical formula names a. Name either the complex, or given the name ...
- calculus - Find the area of the largest rectangle (with sides parallel to the ...
- Math - I am in the 5th grade and my homework tonight is about complex numbers. I...
- Math clarification Reiny - This is the problem you helped me with. I was curious...
- Math Reiny question - This is the problem you helped me with. I was curious, do ...
- algebra - write the equation in logarithm form a) 343=7^3 b) 25-(1/5)-^2 c A=bc ...
- linear approx - I have no idea how to do this, anyone have any hints? Use linear...

More Related Questions