Question about Texas Instruments TI-30XA Calculator

# I cant figure out how to get the square root of a negative number

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The square root of a negative number is an imaginary number, and the TI-30XA does not deal with imaginary numbers.

However, the square root of -x is equal to i times the square root of x. So, to calculate the square root of -4, for example, press 4 square_root = and read 2. Thus the square root of -4 is 2i.

Posted on Oct 07, 2010

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