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What is f? I think this is the hardest equation?

What is f? I think this is the hardest equation?-example-1
User Mezoid
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1 Answer

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(x) basically means y, and f'(x) means dy/dx. The x can have a value, so for example, f(x) = 2x + 1, then f(1) = 3.
User Sharmeca
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