To prove that a symbolic equation is always greater than 0 in Matlab, you can use the `assume`

function to set specific assumptions for the variables in the equation. Then, you can use the `isAlways`

function to check if the equation is always greater than 0 under those assumptions.

Here's an example code snippet:

main.m90 chars7 lines

In this example, we have defined three symbolic variables `x`

, `y`

, and `z`

, and set some assumptions for them using the `assume`

function. Then we have defined an equation `eqn`

that combines these variables, and added the condition that the equation should always be greater than 0. Finally, we use the `isAlways`

function to check if this condition holds true for all possible values of `x`

, `y`

, and `z`

under the given assumptions.

If the output of `isAlways`

is `true`

, then the symbolic equation is always greater than 0 under the given assumptions. Otherwise, you may need to adjust the assumptions or the equation itself to prove the inequality.

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