RC response problem

Hi

I'm trying to solve Practice Problem 7.10. But I'm stuck. I'm not even sure if my procedure is correct. Please help me with it. Many thanks.

Regards
PG

PS: I realize it now. The hard copy of the book I have is 3rd edition while the e-book version is 4th ed. I think there was a mistake in 3rd edition which I was using. So, it's 50V, not 5V.

Hi,

For the circuit shown in problem 7.10 the solution equation is correct, and the voltage at t=0.5 is correct also, and here is a more accurate result:
0.5181916