The record high temperature recorded one year was 93°F while the record low temperature that year was -21°F. How much warmer was the high temperature than the low temperature? 114°F

-72°F

-114°F

72°F

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To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)