But since it's log base four, and this comes straight out of the change of base formulas that you might have seen. And we have a video where we show this. But we just scale it in the denominator with this natural log of four. Or you could think of scaling the whole expression by one over the natural log of four. But we can now use this information because y, this y can be viewed as v of, v of, remember v is the log base four of something. But it's not v of x. We don't have just an x here.