And if you're dealing with a positive value, well, that to the fifth power is gonna be positive cube root of that's still going to be positive. But then you're gonna have negative 2 9ths divided by that positive value. So this is going to be negative. So it is indeed the case that our concavity of g switches as we cross x equals zero. We're concave upwards when x is less than zero, our second derivative is positive, and we are concave downwards when x is greater than zero. Let me write that a little bit. Downwards, downwards when x is greater than zero.