Evaluate $\iint _ { R } \sin \left( 9 x ^ { 2 } + 4 y ^ { 2 } \right) d A$ by making an appropriate change of variables, where R is the region in the first quadrant bounded by the ellipse $9 x ^ { 2 } + 4 y ^ { 2 } = 1$ .

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The Answer of Evaluate $\iint _ { R } \sin \left( 9 x ^ { 2 } + 4 y ^ { 2 } \right) d A$ by making an appropriate change of variables, where R is the region in the first quadrant bounded by the ellipse $9 x ^ { 2 } + 4 y ^ { 2 } = 1$ .

Evaluate ∬Rsin⁡(9x2+4y2)dA\iint _ { R } \sin \left( 9 x ^ { 2 } + 4 y ^ { 2 } \right) d A∬R​sin(9x2+4y2)dA

Evaluate $\iint _ { R } \sin \left( 9 x ^ { 2 } + 4 y ^ { 2 } \right) d A$