6. Verify that fyx = fxy, when it is equal to (i) sin-1(y/x) (ii)logx tan-1(X2+y2)

# 6. Verify that fyx = fxy, when it is equal to (i) sin-1(y/x) (ii)logx tan-1(X2+y2)

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Answer:I don’t know the answer. Sorry