a constant function ) . sprayed on it in a periodic fashion , resulting in the heat equation 15 . A totally insulated metal rod of length / has had a...

My idea is that we can differentiate the energy function. But I have no idea about what I can do in details and the way to solve the problem completely. Thanks

a constant function ) .sprayed on it in a periodic fashion , resulting in the heat equation15 . A totally insulated metal rod of length / has had a heat- producing chemicalwhere Y , A, and a are positive constants . Define the energy at time t asFind all values of a so that the energy is conserved ( that is , the energy isUlt = YU zac + A cos ( Quoc )[` ( t ) = / 26 ( 7 , 20 ) disc