Consider the function f(x)=2x+55x+1. For this function there are two important intervals:(-,A) and (A,) where the function is not defined atA.Find AFor each of the following intervals, tell whether f(x)is increasing (typein INC)or decreasing(typein DEC).(-,A):(A,)Note that this function has no inflection points, but we can still consider its concavity. Foreach of the following intervals, tell whether f(x)is concave up(typeinCU)or concave down(typeinCD).(-,A):(A,)