No it didn't just disappear, it got absorbed into the derivative on the left hand side of the equation after we multiplied through by the integrating factor. I have not done a video on integrating factors as of yet, but it's coming. It may pay to review this material.
hello again sir.. i want to ask, if the volume of substance in tank is decreasing, should the volume equation become V-initial minus with cahnge of volume? is it correct?
Hi! Happy New Year. In short yes. But it doesn't matter if you chose your sign to be a Plus because your net flow rate will be negative, and a plus and a minus still gives you a minus.
Sorry Im a little hung up on where that +y went in 7:21 it just disappeared
No it didn't just disappear, it got absorbed into the derivative on the left hand side of the equation after we multiplied through by the integrating factor. I have not done a video on integrating factors as of yet, but it's coming. It may pay to review this material.
Sorry sir but why is the initial salt quantity wasn't used?
the y(0) is the 15, so once he plugged the 0 in, c/600=15 is the equation solved to get c.
hello again sir.. i want to ask, if the volume of substance in tank is decreasing, should the volume equation become V-initial minus with cahnge of volume? is it correct?
Hi! Happy New Year. In short yes. But it doesn't matter if you chose your sign to be a Plus because your net flow rate will be negative, and a plus and a minus still gives you a minus.
@@MasterWuMathematics woah.. tq tq 👍🏽👍🏽😂 sorry sir for disturbing.. sending love from Malaysia
so where did the (0.2t^2)/2 for the next part because instead of 9000 for c i got 4500
very nice breakdown!
Glad you liked it!
Merci! Very helpful!
You’re welcome!