WEBVTT
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when you have functions like F of X and G
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of axe and H of X, and so on
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. The letter you choose to use for the input
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is really arbitrary. There's nothing sacred about using X
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. There's nothing sacred about using you. So this
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function here, which is currently called F of X
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. It's the same function if I call it f
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of you. And if I replace all the exes
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with use, it means the exact same thing.
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And this function g over here, it's the exact
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same function. If I replace all the use with
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exes, so are these the same function G of
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X equals X plus two plus the square to minus
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U f of X equals X plus square to minus
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you. Yes, those are identical.