Consider the change of variables x = s + 4t, y = s - 5t.
Find the absolute value of the Jacobian $\left| \frac { \partial ( x , y ) } { \partial ( s , t ) } \right|$ .

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The Answer of Consider the change of variables x = s + 4t, y = s - 5t.
Find the absolute value of the Jacobian $\left| \frac { \partial ( x , y ) } { \partial ( s , t ) } \right|$ .

Consider the Change of Variables X = S + 4t ∣∂(x,y)∂(s,t)∣\left| \frac { \partial ( x , y ) } { \partial ( s , t ) } \right|​∂(s,t)∂(x,y)​​

Consider the Change of Variables X = S + 4t $\left| \frac { \partial ( x , y ) } { \partial ( s , t ) } \right|$