Laske funktion [[$ f(x) = 2x + 1 $]]​ arvo, kun
    a) [[$x = 1$]]​ 
    b) [[$x = 10$]]
    c) [[$x = 0$]].​ ​


a) [[$f(1) = 2\cdot$]]​ [[$ + 1 = $]]

b) [[$f($]]​ [[$) = 2\cdot 10 + 1 = $]]

c) [[$f($]]​ [[$) = 2\cdot$]] [[$ + 1 = $]]