Question about Texas Instruments TI-84 Plus Calculator
When I try to convert from polar to rectangular (320e^(-45i)) i get a result of 168.103-272.289i when I should get 226.27 - 226.27i. This is weird because when I do the command (226.27 - 226.71i) >Polar, it will give me the correct answer of 320e^-45i. When I do (168.103-272.289i) >Polar it gives 320e^-58.3i. Is there anyway to fix this? I was pretty sure my calculator was doing this correctly before, but it won't anymore.
At first, Rect and Polar are a display-format instructions, not a conversion functions. Polar instruction displays complex value in rectangular form a + bi. The complex value can have any complex form. However, an r*exp(i*theta) causes an eror in Degree angle mode according to the TI avowal. See captured images below
Posted on Sep 06, 2012
SOURCE: I'm trying to do sin
It is very likely that when you change the angle unit, you are not saving the changes made.
After you finish changing settings, use the TAB key repeatedly to move cursor towards the OK button at the bottom. If you do not confirm changes by clicking OK, they will be lost.
You can also make the changes the default ones by clicking the Make Default option.
Posted on Jul 29, 2011
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