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EhsanZ
#8
Dec20-11, 01:03 AM
P: 11
Quote Quote by mathman View Post
dH/dt = ((d2a/dt2)/a) - ((da/dt)/a)2

Above is incorrect. Should be:

dH/dt = (d2a/dt2)/a - (da/dt)/a2

Your second term is wrong.
No my friend! U made a mistake.