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In what continent is America? The atomic number of oxygen is 8, because oxygen has? H(x) = −xf(x), where f is a function such that f′(x) = sin(1 − x^2) + √7. (Your answer might involve the function f.)? find h(x)? Does an animal breeding major require any chemistry? Define relation R on N by R={(x,y) | x^3 = y^3mod3} Prove R is an equivalence relation on N. The equal sign after x^3 is 3 lined equal.?