Let $z = \sin ( x y )$ , and let $x$ and $y$ be functions of $t$ with $x ( 1 ) = 0 , y ( 1 ) = 1 , x ^ { \prime } ( 1 ) = 2 , \text { and } y ^ { \prime } ( 1 ) = 3$ . Find $d z / d t$ when $t = 1$ .
A)0
B)1
C)2
D)3
E)4
F)5
G)6
H)12

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The Answer of Let $z = \sin ( x y )$ , and let $x$ and $y$ be functions of $t$ with $x ( 1 ) = 0 , y ( 1 ) = 1 , x ^ { \prime } ( 1 ) = 2 , \text { and } y ^ { \prime } ( 1 ) = 3$ . Find $d z / d t$ when $t = 1$ .
A)0
B)1
C)2
D)3
E)4
F)5
G)6
H)12

Let z=sin⁡(xy)z = \sin ( x y )z=sin(xy) , and Let xxx

Let $z = \sin ( x y )$ , and Let $x$