If each bottle of purified water costs 2 yuan, the functional relationship between the amount of money spent on the purchase of purified water and Y (yuan) and the quantity purchased x bottles and the value range of the independent variable are given How much is it

According to the Title Meaning: y = 2x, (x takes natural number)

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1. If the derivative of F (x) = ∫ x0 (x2-t2) f ′ (T) DT is infinitesimal equivalent to X2, then f ′ (0)=______ ．
2. If the derivative of F (x) is infinitesimal equivalent to the derivative of G (x), then are f (x) and G (x) infinitesimal equivalent
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