00:02
Okay, so here we have an exponential equation.
00:05
We've got 4 to the power x equals 5.
00:08
We're asked to solve this exponential equation using logarithms.
00:13
So the main problem here is we can't convert these two bases to be the same.
00:18
So in this case, we're going to need to turn this into a logarithmic expression.
00:23
So we have a log conversion formula, like this.
00:27
Log base v of x equals y.
00:30
We know that this converts to x equals b to the power y.
00:37
So we need to convert our exponential equation into a logarithmic one.
00:45
So we're going to take this base of four, and we're going to imagine it coming under the equal sign and it becoming the base of our logarithm...