If (cosx)^y = (cosy)^x prove that dy/dx = {log (cosy) + Y.(tanx) / log (cosy) +...
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If (cosx)^y = (cosy)^x prove that dy/dx = {log (cosy) + Y.(tanx) / log (cosy) + x (tany)} dx If (cosx)^y = (cosy)^x prove that dy/dx = {log (cosy) + Y.(tanx) / log (cosy) + x (tany)} dx
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