Math

posted by .

Precalc
(1+i)^3
and
the cube root of 8i

  • Math -

    (1+i) = (√2,pi/4)
    so, (1+i)^3 = (2√2,3pi/4) = (-2+2i)

    8i = (8,pi/2)
    (8i)^(1/3) = (2,pi/6) = (√3+i)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Inter. Algebra

    Count Iblis how do you simplify 3square root sign with this underneath (3x squared y) to the third power?
  2. Math

    i see were u got that from but this 1 is confusing. 6 (index 3) square root of 36 times 2 (index 3)square root of 6 Please use the following for roots: sqrt cubroot etc. Those, with parenthesis, make the problem clear. 6 cube root …
  3. Algebra

    Could you please help me with some math problems?
  4. Calculus

    Find the functions a) f o g, b) g o f, c) f o f, d) g o g, and their domains. f(x)= square root of x, g(x)= cube root of 1-x These are my answers, but I am not sure about them and I only figured out one domain... that is the part that …
  5. Calc

    Find the functions a) f o g, b) g o f, c) f o f, d) g o g, and their domains. f(x)= square root of x, g(x)= cube root of 1-x These are my answers, but I am not sure about them and I only figured out one domain... that is the part that …
  6. Math 117

    Use rational exponent to write 4 cube root x multiply by 6 cube root 6x as a single radical expresion.
  7. Math 117

    Use rational exponent to write 4 cube root x multiply by 6 cube root 6x as a single radical expresion.
  8. Algebra

    Simplify: 5(cube root of 16) + 2(cube root of 54) 5 times the cube root of 16 plus 2 times the cube root of 54. I do not know how to type in the radical signs. Sorry.
  9. Algebra

    I need help on these kinds of radical problems. Once I get the examples solved, I think I can do others. 1. What is the solution to the square root of -9?
  10. Math

    Use differential, (i.e. linear approximation), to approximate cube root of 64.1 as follows: Let f(x) = cube root of x. The linear approximation to f(x) at x = 64 can be written in the form y = mx+b. Compute m and b and find cube root …

More Similar Questions