f: R2-->R is defined by f(x) = absolute value of x. Find Df(1,0). So Df(x)=[x/sqrt.(x^2), 0] So Df(1,0)= 1/sqrt.1^2=1 Did I do this right?
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Originally Posted by Taurus3 f: R2-->R is defined by f(x) = absolute value of x. Find Df(1,0). Do you mean f(x,y)= |x|? Or ? So Df(x)=[x/sqrt.(x^2), 0] So Df(1,0)= 1/sqrt.1^2=1 Did I do this right? If you meant f(x, y)= |x|, for x positive |x|= x so the derivative with respect to x is 1 and the derivative with respect to y is 0. . If you meant , then so .
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