Solve the following problems for x(t). The input g(t) is a unit-step function, g(t) = us(t). Compare the values of x(0+) and x(0-). For parts (c) and (d), also compare the values of  (0+) and i(0-).

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a. 7* + 5x= 4g (t) x(0-) = 3, g(0-) = 0 b. 7x + 5x = 4g (t) + 6g (t) x(0-) = 3, g(0-) = 0 c. 3x + 30x + 63x = 4g (t) x(0-) = 2 * (0-) = 3, g(0-) = 0 d. 3x + 30x + 63x =4g (t) + 6g(t) x(0-) = 4 * (0-) = 7, g(0-) = 0