It can be shown that y₁ = 2 and y2 = = cos²(9x) + sin²(9x) are solutions to the differential equation 9x³ sin(2x) (a) What does the Wronskian of y₁, y2 equal on (0,4)? W(31, 32) = on (0,4). (b) Is {y1, y2} a fundamental set for the given differential equation? Choose ✓ d'y dx² - 2x² cos(9x). = 0 on (0,4). dy dx

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