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Let y\ =\ f(x) be a function such tha...

Let `y\ =\ f(x)` be a function such that `f(x)=x^3\ \ ` and the line `x\ +\ y\ =\ 0` is tangent to the graph of `f(x)` then which of the following alternative(s) is/are correct? `f(0)=-3/4` (b) `f\ (1)=1` `f(-1)=1` (d) `f(3)=21`

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