Math, asked by ritiksahay0, 3 months ago

dx
-1 Y -y2 tan
oy
- 1 x
x
, prove that
14. If u=x2 tan
х
у
2
х
2
a²u
2.
ду дх
х
+
+y2

Answers

Answered by pc955392

2

Answer:

Marry Christmas dear.....

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