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## How do you solve an equation with a variable in Matlab?

**S = solve( eqn , var )** solves the equation eqn for the variable var . If you do not specify var , the symvar function determines the variable to solve for. For example, solve(x + 1 == 2, x) solves the equation x + 1 = 2 for x.

## How do you solve an equation for a specific variable?

We can get a formula like this by solving the formula d=rt d = r t for t . To solve a formula for a specific variable means to **get that variable by itself with a coefficient of 1 on one side of the equation and all the other variables and constants on the other side**.

### Matlab Tutorial – 49 – Solving Algebraic Equations

### Images related to the topicMatlab Tutorial – 49 – Solving Algebraic Equations

## How do I find the value of a variable in Matlab?

You also can view the value of a variable or equation by **selecting it in the Editor and Live Editor, right-clicking, and selecting Evaluate Selection in Command Window**. MATLAB displays the value of the variable or equation in the Command Window.

## What does Syms mean in MATLAB?

syms **lists the names of all symbolic scalar variables, functions, and arrays in the MATLAB workspace**. example. S = syms returns a cell array of the names of all symbolic scalar variables, functions, and arrays.

## How do you isolate a variable in an equation?

The basic technique to isolate a variable is to **“do something to both sides” of the equation, such as add, subtract, multiply, or divide both sides of the equation by the same number**. By repeating this process, we can get the variable isolated on one side of the equation.

## How do you open a variable in MATLAB?

**Right-click the variable and select Edit Value**. To edit other variables, double-click the variable name in the Workspace browser to open it in the Variables editor.

## What are MATLAB commands?

**an interactive program for numerical computation and data visualization**.

…

Commands for Working with the System.

Command | Purpose |
---|---|

pwd | Displays current directory. |

save | Saves workspace variables in a file. |

type | Displays contents of a file. |

what | Lists all MATLAB files in the current directory. |

## How do you search in MATLAB?

Search Using Find Dialog Box

To search for specified text in the Command Window, **on the Command Window title bar, click , and then select Find**. The Find dialog box opens. The search begins at the current cursor position. MATLAB^{®} finds the text you specified and highlights it.

### Solving Symbolic Expressions and Equations

### Images related to the topicSolving Symbolic Expressions and Equations

## Can you solve an equation in MATLAB?

Solve an Equation

If eqn is an equation, **solve(eqn, x) solves eqn for the symbolic variable x** . Use the == operator to specify the familiar quadratic equation and solve it using solve . solx is a symbolic vector containing the two solutions of the quadratic equation.

## How do you input an equation into MATLAB?

**To insert an equation interactively:**

- Go to the Insert tab and click Equation. A blank equation appears.
- Build your equation by selecting symbols, structures, and matrices from the options displayed in the Equation tab. …
- Format your equation using the options available in the Text section.

## What does abs do in MATLAB?

abs (MATLAB Functions) abs(X) **returns an array Y such that each element of Y is the absolute value of the corresponding element of X** .

## How do you solve quadratic equations?

What are the steps? To solve a quadratic equation using the quadratic formula: Rewrite the equation in the form a x 2 + b x + c = 0 ax^2+bx+c=0 ax2+bx+c=0a, x, squared, plus, b, x, plus, c, equals, 0. Substitute the values of a, b, and c into the quadratic formula, shown below.

## What is the difference between SYM and Syms in MATLAB?

These two functions are conceptually different. The syms function creates a symbolic object that is automatically assigned to a MATLAB® variable with the same name. The sym function refers to a symbolic object that can be assigned to a MATLAB variable with the same name or a different name.

## What is diff function MATLAB?

Y = diff( X ) **calculates differences between adjacent elements of X along the first array dimension whose size does not equal 1**: If X is a vector of length m , then Y = diff(X) returns a vector of length m-1 . The elements of Y are the differences between adjacent elements of X .

### How to Solve Simultaneous Equations in MatLAB Using linsolve and solve

### Images related to the topicHow to Solve Simultaneous Equations in MatLAB Using linsolve and solve

## How do I turn off Syms in MATLAB?

To clear the assumption for the variable x , **use the command assume(x,’clear’)** . Alternatively, you can create a fresh symbolic variable without assumptions using syms . If you want to clear a symbolic variable and also reset the symbolic engine, use the command clear all .

## How do you isolate a variable with two variables?

To solve systems of algebraic equations containing two variables, start by moving the variables to different sides of the equation. Then, divide both sides of the equation by one of the variables to solve for that variable. Next, take that number and plug it into the formula to solve for the other variable.

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