The tangent line equation calculator is used to calculate the equation of tangent line to a curve at a given abscissa point with stages calculation.

Equation_tangent_line online

C is the graph of a differentiable function f at point a. The tangent to C at point A (a, f (a)) is the line through A and whose director coefficient is `f'(a)`.

An **equation of the tangent** to C at point A (a; f (a)) is :
`y = f(a) + f'(a)(x-a)`.

It is through this approach that the function equation_tangent_line allows **determine online the reduced equation of a tangent**
to a curve at a given point.

For example, to **calculate the equation of the tangent** at 1 of the function `f: x-> x^2+3`, enter
equation_tangent_line(x^2+3;1) , after calculating the result `[y=2+2*x]` is returned.

The calculator shows the steps for determining the equation of the tangent.

It is possible from the equation of the representative curve of a function to use the online graphing calculator for draw the tangent of a function at a point.

The tangent line equation calculator is used to calculate the equation of tangent line to a curve at a given abscissa point with stages calculation.

Note: x must always be used as a variable

This example shows how to **find** **equation of tangent line** using the **calculator** :

equation_tangent_line(x^2+3;1), returns [y=2+2*x]

Calculate online with equation_tangent_line (Find the equation of tangent line)
See also :

- Arithmetic solver : arithmetic_solver. This solver allows finding a target number from a set of integer in using arithmetic operations.
- Solving quadratic equation with complex number : complexe_solve. The complex number equation calculator returns the complex values for which the quadratic equation is zero.
- Calculation of the discriminant online : discriminant. Calculator that allows the calculation of the discriminant of a quadratic equation online.
- Equation solver : equation_solver. The equation solver allows to solve equations with an unknown with calculation steps : linear equation, quadratic equation, logarithmic equation, differential equation.
- Find equation of a straight line from two points : equation_straight_line. The equation_straight_line function allows to calculate the equation of a straight line from the coordinates of two points with step by step calculation.
- Find the equation of tangent line : equation_tangent_line. The tangent line equation calculator is used to calculate the equation of tangent line to a curve at a given abscissa point with stages calculation.
- Inequality calculator : inequality_solver. Inequality solver that solves an inequality with the details of the calculation: linear inequality, quadratic inequality.
- Pythagorean theorem : pythagorean. The function makes it possible to verify by using the Pythagorean theorem knowing the lengths of the sides of a triangle that this is a right triangle. If the sides of the triangle depend on a variable, then the value of the variable is calculated so that the triangle is a right triangle.
- Solve system of linear equations : solve_system. The solve_system function allows to solve equations with several unknowns: Equation 2 unknown systems, systems of equations with 3 unknown in n unknowns systems.