What are the x-intercepts of the quadratic function y = x^2 - 4x + 3?
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Find the minimum value of the function f(x) = 2sin(3x) + cos(4x) in radians for x in the domain [0, 2Ο].
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What is the end behavior of the cubic function f(x) = x^3? Does it approach positive infinity as x approaches positive infinity? Does it approach negative infinity as x approaches negative infinity? Justify your answer.