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OpenStudy (anonymous):
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OpenStudy (anonymous):
why is sqrt{x^2}=|x|?? let f(x)=sqrt{x^2} g(x)=x h(x)=|x| at x= -1 we have f(x)=plus minus 1 g(x)=-1 h(x)=1 clearly it looks like sqrt{x^2}=plus minus x sorry my equation box is giving errors right now so im using this
ganeshie8 (ganeshie8):
|dw:1435127988303:dw|
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