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If the function f(x)=-x^4+2x^2-1 odd, even, or neither? Why? Find the real zeros of f(x)=1/3x^2+1/3x-2/3....? Electrical Engineering MSEE/PhD Advice? What are gradually changes on earth? Which substance could you use to demonstrate "morphing" ? Are these substances fluids? For each explain your answer.?