hey guys! just a quick how to find inverse 1/z? for the complex number (-3-4i) i know its very easy, but its really late and my brain has givven up on me. sorry please help thank you
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Originally Posted by boomshine57th hey guys! just a quick how to find inverse 1/z? for the complex number (-3-4i) i know its very easy, but its really late and my brain has givven up on me. sorry please help thank you Multiply by the conjugate $\displaystyle -3+4i$
the conjugate is -3+4i so do i multiply (-3+4i)(-3-4i) is that what u meant? sorry if i sounds very stupid thank you for helping me
Originally Posted by boomshine57th the conjugate is -3+4i so do i multiply (-3+4i)(-3-4i) is that what u meant? sorry if i sounds very stupid thank you for helping me $\displaystyle \frac{1}{-3-4i}\cdot\frac{-3+4i}{-3+4i}$
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