They're asking us for an f of x equaling zero. Zero isn't between f of four and f of six. And so we cannot use the intermediate value theorem here. And so if we wanted to write it out, we could say f is continuous, is continuous, but, but zero is not between, between f of four and f of six. So the intermediate value theorem does not apply. All right, let's do the second one. So here they say, can we use the intermediate value theorem to say that there is a value c such that f of c equals zero and two is less than or equal to c is less than or equal to four?