Consider the equations x² - y² − z³+w² +4 2xy + y²-22² +3w¹ +8 0 = 0. (a) Show that near (a, b) = (xo, yo, zo, wo) = (2,-1, 2, 1), z and w can be expressed as differentiable functions of a and y. dw (b) Compute at (2,-1,2,1). ar

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