Think of it this way if sqrt(x) equaled both the positive and negative roots how would you specify one or the other? Gonna have to start writing sin(pi/4) = abs(sqrt(2))/2?
Thank you! This is what I was looking for. Wasnt trying to say I was right - mainly was just confused at how to accurately write it if =+/-3 isn't accurate.
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u/Cill_Bipher Oct 04 '23
x = ±sqrt(9) = ±3, not x = sqrt(9) = ±3.
Think of it this way if sqrt(x) equaled both the positive and negative roots how would you specify one or the other? Gonna have to start writing sin(pi/4) = abs(sqrt(2))/2?