$$\text { Find the value of } d ^ { 2 } y / d x ^ { 2 } \text { at the point defined by the given value of } t \text {. }$$
-$$x = \tan t , y = 9 \sec t , t = \frac { 3 \pi } { 4 }$$
A) $- \frac { 9 } { 2 }$
B) $- \frac { 9 \sqrt { 2 } } { 4 }$
C) $9 \sqrt { 2 }$
D) $\frac { \sqrt { 2 } } { 4 }$

Question

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The Answer of $$\text { Find the value of } d ^ { 2 } y / d x ^ { 2 } \text { at the point defined by the given value of } t \text {. }$$
-$$x = \tan t , y = 9 \sec t , t = \frac { 3 \pi } { 4 }$$
A) $- \frac { 9 } { 2 }$
B) $- \frac { 9 \sqrt { 2 } } { 4 }$
C) $9 \sqrt { 2 }$
D) $\frac { \sqrt { 2 } } { 4 }$

Find the value of d2y/dx2 at the point defined by the given value of t. \text { Find the value of } d ^ { 2 } y / d x ^ { 2 } \text { at the point defined by the given value of } t \text {. } Find the value of d2y/dx2 at the point defined by the given value of t.

$\text { Find the value of } d ^ { 2 } y / d x ^ { 2 } \text { at the point defined by the given value of } t \text {. }$