Partial derivative calculator is used to calculate the derivatives of the functions w.r.t several variables with steps. This partial derivative solver differentiates the given constant, linear, or polynomial functions multiple times. It is a subtype of the derivative calculator.

“In differential calculus, the differentiation of a function of multivariable w.r.t change in just one of its variables is known as a partial derivative.”

The equations of partial derivatives can be written as:

• \(\frac{\partial }{\partial x}\left(f\left(x,y,z\right)\right)\)

The above equation is used for a multivariable function to calculate the partial differential w.r.t “**x**”.

• \(\frac{\partial }{\partial y}\left(f\left(x,y,z\right)\right)\)

This equation used, if a function has to be solved w.r.t “**y**”.

• \(\frac{\partial }{\partial z}\left(f\left(x,y,z\right)\right)\)

This equation is used when the partial derivative of a function has to be solved w.r.t “**z**”

Use our partial derivative calculator xyz for getting the results of multivariable problems.

To use this first partial differentiation calculator, follow the steps below.

- Input the multivariable function like f(x, y, z).
- Choose one variable from x, y, and z while other variables remain constant.
- Use the
**keypad icon**to enter math keys i.e., +, x, ^, etc. - Hit the
**calculate**button to get the result of the given input function. - Press the
**show more**button to get the step-by-step calculations. - If you want to calculate another problem hit the
**reset**button next to the calculate button.

Following are two examples of the 3 variables function evaluated by our multivariable derivative calculator.

**Example 1**

Find the partial derivative of **3xyz** w.r.t “**x**”.

**Solution**

**Step 1: **Write the function with the partial differentiation notation.

\(\frac{\partial }{\partial x}\left(3xyz\right)\)

**Step 2:** Now calculate the partial derivative of 3xyz w.r.t “x” while y & z remains constant.

\(\frac{\partial }{\partial x}\left(3xyz\right)=3yz\frac{\partial }{\partial x}\left(x\right)\)

\(\frac{\partial }{\partial x}\left(3xyz\right)=3yz\left(1\right)\)

\(\frac{\partial }{\partial x}\left(3xyz\right)=3yz\)

**Step 3:** Similarly, the partial derivative of 3xyz w.r.t y & z are:

\(\frac{\partial }{\partial y}\left(3xyz\right)=3xz\)

\(\frac{\partial }{\partial z}\left(3xyz\right)=3xy\)

**Example 2**

Find the partial derivative of \(3x^2y+4xyz-9xy\) w.r.t “**y**”.

**Solution **

**Step 1:** Write the given function along with the partial derivative notation.

\(\frac{\partial }{\partial y}\left(3x^2y+4xyz-9xy\right)\)

**Step 2:** Now apply the notation separately.

\(\frac{\partial }{\partial y}\left(3x^2y+4xyz-9xy\right)=\frac{\partial }{\partial y}\left(3x^2y\right)+\frac{\partial }{\partial y}\left(4xyz\right)-\frac{\partial }{\partial y}\left(9xy\right)\)

**Step 3: **Now calculate the partial derivative of \(3x^2y+4xyz-9xy\) w.r.t “**y**” while x & z remains constant.

\( \frac{\partial }{\partial y}\left(3x^2y+4xyz-9xy\right)=3x^2\frac{\partial }{\partial y}\left(y\right)+4xz\frac{\partial }{\partial y}\left(y\right)-9x\frac{\partial }{\partial y}\left(y\right)\)

\( \frac{\partial }{\partial y}\left(3x^2y+4xyz-9xy\right)=3x^2\left(1\right)+4xz\left(1\right)-9x\left(1\right)\)

\( \frac{\partial }{\partial y}\left(3x^2y+4xyz-9xy\right)=3x^2+4xz-9x\)

**Step 4: **Similarly, the partial derivative of given function w.r.t x & z are:

\( \frac{\partial }{\partial x}\left(3x^2y+4xyz-9xy\right)=6xy+4yz-9y\)

\( \frac{\partial }{\partial z}\left(3x^2y+4xyz-9xy\right)=4xy\)

Following are questions and answers of partial derivatives solved by this partial derivatives calculator.

Questions | Answers |

Partial derivative of xy w.r.t x | y |

Partial derivative of xy w.r.t y | x |

Partial derivative of xy w.r.t z | 0 |

Partial derivative of e^xy w.r.t x | \(ye^{xy}\) |

Partial derivative of e^xyz w.r.t x | \(yze^{xyz}\) |

Partial derivative of sqrt(xy) w.r.t x | \(\frac{y}{2\sqrt{xy}\:}\) |

- Partial derivative | Encyclopædia Britannica

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