consider the function f(x)= x+3cosx for 0

Question

consider the function f(x)= x+3cosx for 0<x<2pi. graph the function. use your graph to find how many roots there are to the equation f(x)=4. i.e. how many solutions there are to the equation x+3xcox=4

anonymous · Answer

btw the last equation should be x+3cosx=4 . NOT x+3xcosx=4

anonymous · Answer

thank you, but i need to show calculus, not just type it into the calculator and graph it.

campbell_st · Answer

well a couple of things... f(x) = 4 has no roots, its a horizontal line through y = 4

so if you graph the 2 curves you are looking at the point of intersection... as the solution.