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Evaluate the Determinant e7xe4x7e7x4e4x\left | \begin{array} { c c } e ^ { 7 x } & e ^ { 4 x } \\7 e ^ { 7 x } & 4 e ^ { 4 x }\end{array} \right |

Question 21

Multiple Choice

Evaluate the determinant e7xe4x7e7x4e4x\left | \begin{array} { c c } e ^ { 7 x } & e ^ { 4 x } \\7 e ^ { 7 x } & 4 e ^ { 4 x }\end{array} \right | in which the entries are functions.


A) 3e11x- 3 e ^ { 11 x }
B) 74e28x\frac { 7 } { 4 } e ^ { 28 x }
C) 47e11x\frac { 4 } { 7 } e ^ { 11 x }
D) 3e28x- 3 e ^ { 28 x }
E) 37e11x- \frac { 3 } { 7 } e ^ { 11 x }

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