# Matlab solve for x

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Help Center Help Center. This toolbox offers both numeric and symbolic equation solvers. For a comparison of numeric and symbolic solvers, see Select Numeric or Symbolic Solver. First, create the necessary symbolic objects. There are several ways to address the output of solve.

## Matlab solve for x

Help Center Help Center. You can solve algebraic equations, differential equations, and differential algebraic equations DAEs. Solve algebraic equations to get either exact analytic solutions or high-precision numeric solutions. For analytic solutions, use solve , and for numerical solutions, use vpasolve. For solving linear equations, use linsolve. These solver functions have the flexibility to handle complicated problems. See Troubleshoot Equation Solutions from solve Function. Solve differential equations by using dsolve. Create these differential equations by using symbolic functions. See Create Symbolic Functions. Solve a differential equation analytically by using the dsolve function, with or without initial conditions. Explores the physics of the damped harmonic oscillator by solving the equations of motion in the case of no driving forces. This example investigates the cases of under-, over-, and critical-damping. Simulates a tsunami wave phenomenon by solving the partial differential equations that model the tsunami.

In this case, the number of variables that symvar finds is equal to the number of output arguments N.

Help Center Help Center. The matrices A and B must have the same number of rows. It enables operator overloading for classes. In this particular example, the norm of the residual is zero, and an exact solution is obtained, although rcond is small. When rcond is equal to 0 , the singular warning appears.

Help Center Help Center. For a comparison of numeric and symbolic solvers, see Select Numeric or Symbolic Solver. An equation or a system of equations can have multiple solutions. To find these solutions numerically, use the function vpasolve. For polynomial equations, vpasolve returns all solutions.

### Matlab solve for x

Help Center Help Center. You can solve algebraic equations, differential equations, and differential algebraic equations DAEs. Solve algebraic equations to get either exact analytic solutions or high-precision numeric solutions. For analytic solutions, use solve , and for numerical solutions, use vpasolve. For solving linear equations, use linsolve. These solver functions have the flexibility to handle complicated problems. See Troubleshoot Equation Solutions from solve Function.

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Search MathWorks. For example, solve eqn for b. For polynomial equations, vpasolve returns all solutions. Assign the solutions to variables solv and solu by specifying the variables explicitly. The number of output variables or symbolic arrays must be equal to the number of independent variables in a system. This syntax returns a structure array Y that contains the solutions. Convert system of first-order differential algebraic equations to equivalent system of differential index 1. Variables that are assigned solutions of system of equations, returned as an array of numeric or symbolic variables. When you solve a system of equations with nonunique solutions, the behavior of vpasolve depends on whether the system is polynomial or nonpolynomial. Despite this loss of accuracy, you might need to convert symbolic results to numeric approximations for use in numeric calculations. Help Center Help Center.

Help Center Help Center. This topic shows you how to solve an equation symbolically using the symbolic solver solve. To compare symbolic and numeric solvers, see Select Numeric or Symbolic Solver.

Tips If vpasolve cannot find a solution, it returns an empty object. Off-Canvas Navigation Menu Toggle. In this case, the number of variables that symvar finds is equal to the number of output arguments N. Help Center Help Center. Take action to avoid this condition. Linear System with Sparse Matrix. For sparse matrix inputs, the language standard must be C99 or later. If vpasolve cannot find a solution, it returns an empty object. Provide three output variables: for the solution to x , for the parameters in the solution, and for the conditions on the solution. No, overwrite the modified version Yes.

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