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###### Select all the exact differential equations In the following Ilstty 'ty dyldt =Y sir(t) {cos(y) dy/dr =Zyt + (+1) dyfdt =t dt +Y dy = 0Y dt + [ dy =cost) (siniy) dyldi =Ly dt [y dy =Y dr - ! dy = 0 cosit y) tcosity} dylot = 0cositV cos(ty) cy/dt =

Select all the exact differential equations In the following Ilst ty 'ty dyldt = Y sir(t) {cos(y) dy/dr = Zyt + (+1) dyfdt = t dt +Y dy = 0 Y dt + [ dy = cost) (siniy) dyldi = Ly dt [y dy = Y dr - ! dy = 0 cosit y) tcosity} dylot = 0 cositV cos(ty) cy/dt =

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