00:01
Okay, this is the differential equation that we're given.
00:06
And so i'm going to let u equal 2x plus 1.
00:17
So then du is going to be 2dx, and therefore dx is going to be 1ā2dx, and therefore dx is going to be 1ā2d.
00:29
So, d .y is going to be u to the fourth power times dx, which is one -half du.
00:43
Therefore, y is going to be u to the fifth power over five times one -half plus c.
01:03
Now, i said that u is 2x plus one.
01:07
So it's going to be 2x plus 1 to the 5th power over 10 plus c.
01:19
Now we know that y equals 6 when x equals 1.
01:23
6 equals 2 plus 1 to the 5th power over 10 plus c.
01:33
6 equals 3 to the 5th power over 10.
01:40
Oh my goodness, what is that? 3 to the 5th power, which is 243...