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Extract mass matrix and right side of semilinear system of differential algebraic equations

`[`

returns
the mass matrix `M`

,`F`

] =
massMatrixForm(`eqs`

,`vars`

)`M`

and the right side of equations `F`

of
a semilinear system of first-order differential algebraic equations
(DAEs). Algebraic equations in `eqs`

that do not
contain any derivatives of the variables in `vars`

correspond
to empty rows of the mass matrix `M`

.

The mass matrix `M`

and the right side of
equations `F`

refer to this form.

$$M\left(t,x\left(t\right)\right)\dot{x}\left(t\right)=F\left(t,x\left(t\right)\right).$$

`daeFunction`

| `decic`

| `findDecoupledBlocks`

| `incidenceMatrix`

| `isLowIndexDAE`

| `matlabFunction`

| `ode15s`

| `odeFunction`

| `odeset`

| `reduceDAEIndex`

| `reduceDAEToODE`

| `reduceDifferentialOrder`

| `reduceRedundancies`