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# Complex numbers and arguments

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HP 38g calculator

i have the hp 38g calculator and i cannot find arguments in complex numbers(i find as functions in math>>complex>>ARG etc. but i cannot use properly).For example when i enter this it gives me result 0. For example THIS:

How do i enter this in the calc?Thanks in advance

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To calculate your example, type the following into the 38g's entry line in degree mode, using the square root symbol where I have "sqrt" and the angle symbol where I have "angle":

(10, angle 45)*sqrt(2)*(10, angle 180)

This returns the complex result of -(100,100) which of course equals -100-100*i. You can then use the ABS and ARG commands on that result to see that it is equal to "100*sqrt(2) at angle -135°" in polar notation.

Hope that helps!  Disclaimer: I don't work for HP, but I love their calculators.

-Joe-
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thank u very much friend.Have a nice day!

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