{"issue":{"title":"Add some complex number exercises","user":{"login":"MichalPokorny","id":714892,"url":"https://api.github.com/users/MichalPokorny","avatar_url":"https://secure.gravatar.com/avatar/e798f7d43308ce489ff5f88834b66a40?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png","gravatar_id":"e798f7d43308ce489ff5f88834b66a40"},"created_at":"2011-12-27T20:19:33Z","milestone":null,"labels":[],"state":"open","updated_at":"2011-12-29T15:32:18Z","id":2665983,"closed_at":null,"html_url":"https://github.com/Khan/khan-exercises/issues/9624","pull_request":{"patch_url":"https://github.com/Khan/khan-exercises/pull/9624.patch","html_url":"https://github.com/Khan/khan-exercises/pull/9624","diff_url":"https://github.com/Khan/khan-exercises/pull/9624.diff"},"body":"Hi, I wrote some complex number exercises, namely Adding and subtracting complex numbers, Absolute value of complex numbers, Imaginary unit powers, The complex plane (for complex number visualization), Complex number polar form intuition (interactive, for understanding the meaning of the radius and angle variables), Multiplying complex numbers and Dividing complex numbers.","number":9624,"url":"https://api.github.com/repos/Khan/khan-exercises/issues/9624","comments":14,"assignee":null},"comment":{"user":{"login":"mjptak","id":856425,"url":"https://api.github.com/users/mjptak","avatar_url":"https://secure.gravatar.com/avatar/e70f945d225893127d3443e755573f56?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png","gravatar_id":"e70f945d225893127d3443e755573f56"},"created_at":"2011-12-29T15:32:18Z","updated_at":"2011-12-29T15:32:18Z","id":3301601,"body":"Michael: I really love your exercises.  One question as much as a comment is the non-use of the polar form | r |e^(i theta) especially when dealing with division and multiplication.    It rates being one of the \"modes\" on what remains (for now) one of the standard high school calculators the TI-83 though I love that your exercises do not require calculator use.   Perhaps in the end the exercise that I envision is already there....exponent rules(:)).  Again, thanks for the excellent exercises...I plan on trying them out with my 7th and 10th grader the next time they extra dad credits.","url":"https://api.github.com/repos/Khan/khan-exercises/issues/comments/3301601"},"action":"created"}