For each of the following problems, determine which are exact differentials, and hence solve the differential equations
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For each of the following problems, determine which are exact differentials, and hence solve the differential equations where possible:
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(a) 2x1 dx = a - 2x4, x(1) = 2 dt (b) (2xt + 2t + f) dx + x + 2x = 0, x(2) = 2 dt dx (c) (t cos.xt) + xcos.xt + 1 = 0, x(T) = 0 dt dx dr (d) (t cosxt)- - xcos xt =0, x() = 0 (e) te dx + 1 + xe" = 0, x(2) = 4 dt
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