![How do you use implicit differentiation to find an equation of the tangent line to the curve x^2 + 2xy − y^2 + x = 39 at the given point (5, 9)? | Socratic How do you use implicit differentiation to find an equation of the tangent line to the curve x^2 + 2xy − y^2 + x = 39 at the given point (5, 9)? | Socratic](https://useruploads.socratic.org/QZTpyiZcSLGiCQBMG7mU_desmos-graph.png)
How do you use implicit differentiation to find an equation of the tangent line to the curve x^2 + 2xy − y^2 + x = 39 at the given point (5, 9)? | Socratic
A curve is such that (d^2y/dx^2) = (3x+2) ^-1÷3. The curve has gradient 4 at point (2,6.2). What is the equation of the curve? - Quora
![vector analysis - Help with the definition of the Gradient in Multi-variable Calculus - Mathematics Stack Exchange vector analysis - Help with the definition of the Gradient in Multi-variable Calculus - Mathematics Stack Exchange](https://i.stack.imgur.com/6ASmd.png)
vector analysis - Help with the definition of the Gradient in Multi-variable Calculus - Mathematics Stack Exchange
![implicit differentiation - The equation of the normal when the gradient of the tangent = 0 - Mathematics Stack Exchange implicit differentiation - The equation of the normal when the gradient of the tangent = 0 - Mathematics Stack Exchange](https://i.stack.imgur.com/b94zi.png)