1. (20 pts.) Let f(x, y) = cot ¹(4x² + 3y²).
Find f, where f = V • V
2² 8²
+
əx² dy²
is the Laplace operator. Simplify your answer.

1 20 pts Let fx y cot 4x 3y Find f where f V V 2 8 əx dy is the Laplace operator Simplify your answer class=