Expression 2: "f" left parenthesis, "x" , right parenthesis equals 5cosine left parenthesis, StartFraction, StartRoot, 10 , EndRoot Over 25 , EndFraction "x" , right parenthesis Superscript, .5 5 , Baselinefx=5cos1025x.55
2
Expression 3: negative "f" left parenthesis, "x" minus 2.5 StartRoot, 10 , EndRoot pi , right parenthesis−fx−2.510π