Let $z = x y$ , and Let $x$ And $y$ Be Functions Of

question 17

Multiple Choice

Let $z = x y$ , and let $x$ and $y$ be functions of $t$ with $x ( 1 ) = 1 , y ( 1 ) = 2 , x ^ { \prime } ( 1 ) = 3 \text {, and } y ^ { \prime } ( 1 ) = 4$ . Find $d z / d t$ when $t = 1$ .

• A)5
• B)6
• C)7
• D)8
• E)9
• F)10
• G)11
• H)12

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Definitions:

Long-haired

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