007A Sample Midterm 3, Problem 4 Solution

Consider the circle  Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle x^{2}+y^{2}=25.}

(a)  Find  ${\frac {dy}{dx}}.$

(b)  Find the equation of the tangent line at the point  Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle (4,-3).}

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