# Find dy/dx ycos(x)=x^2+y^2

Differentiate both sides of the equation.
Differentiate the left side of the equation.
Differentiate using the Product Rule which states that is where and .
The derivative of with respect to is .
Simplify the expression.
Move to the left of .
Rewrite as .
Rewrite as .
Differentiate the right side of the equation.
Differentiate.
By the Sum Rule, the derivative of with respect to is .
Differentiate using the Power Rule which states that is where .
Evaluate .
Differentiate using the chain rule, which states that is where and .
To apply the Chain Rule, set as .
Differentiate using the Power Rule which states that is where .
Replace all occurrences of with .
Rewrite as .
Reorder terms.
Reform the equation by setting the left side equal to the right side.
Solve for .
Reorder factors in .
Subtract from both sides of the equation.
Add to both sides of the equation.
Factor out of .
Factor out of .
Factor out of .
Divide each term by and simplify.
Divide each term in by .
Cancel the common factor of .
Cancel the common factor.
Divide by .
Replace with .
Find dy/dx ycos(x)=x^2+y^2