y

a = 4 (slider from 0.1 to 10, step 0.1)
testo1: "y=log_{" + (LaTeX[a]) + "}x"
A1(x) = x
A2 = 0.1
A3 = 0.2
A5 = 0.5
A6 = 1
A7 = 1.5
A8 = 2
A9 = 2.25
A10 = 3
A11 = 4
A12 = 4.5
A13 = 5
A14 = 5.5
A15 = 6
A16 = 6.5
A18 = 7.5
A19 = 8
A20 = 9
A21 = 10
A17 = 7
f(x) = log(x) / log(a)
B2: f(A2)
B3: f(A3)
A4 = 0.25
B4: f(A4)
B5: f(A5)
B6: f(A6)
B7: f(A7)
B8: f(A8)
B9: f(A9)
B10: f(A10)
B11: f(A11)
B12: f(A12)
B13: f(A13)
B14: f(A14)
B15: f(A15)
B16: f(A16)
B17: f(A17)
B18: f(A18)
B19: f(A19)
B20: f(A20)
B21: f(A21)