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Form initial guess for boundary value problem solver

`solinit = bvpinit(x,yinit)`

`solinit = bvpinit(sol,[anew bnew])`

`solinit = bvpinit(___,parameters)`

forms an initial guess for the solution on the interval `solinit`

= bvpinit(`sol`

,[anew bnew])`[anew bnew]`

,
where `sol`

is a solution structure obtained from
`bvp4c`

or `bvp5c`

. The new interval ```
[anew
bnew]
```

must be larger than the previous interval on which `sol`

is defined. The previous solution `sol`

is extrapolated to the new
interval.

specifies a vector of initial guesses for parameters with unknown values in the boundary
value problem. You can use this syntax with either of the previous input argument
combinations.`solinit`

= bvpinit(___,`parameters`

)