Question

let f be the function given by f(x)=cos(x). if the number c satisfies the conclustion of the mean value theorem for f on the clsoed interval [2,4], then c=

Answer 1

really?

Answer 2

you have to solve
\[-\sin(c)=\frac{\cos(4)-\cos(2)}{4-2}\] but other than 4 - 2 = 2 i would have no idea how to do it without technology

Answer 3

did that, calculators can be used. I used my calculator to graph y=sin(x) and then y=.11875 and got 3.023 and another person did the same thing with the same rounding and everything and got 3.142, but both numbers are options

Answer 4

oh and i used the intersection tool on the calculator to get that answer