\(f_1(x):\)
f_1(x)=
Use characters 'a','b','c' or 'd' as parameters to manipulate


\( f_2(x): \)
f_2(x)=
Use characters 'a','b','c' or 'd' as parameters to manipulate


\( f_3(x): \)
f_3(x)=
Use characters 'a','b','c' or 'd' as parameters to manipulate


\( f_4(x): \)
f_4(x)=
Use characters 'a','b','c' or 'd' as parameters to manipulate


Set Window Parameters
X_{min}: -8 X_{max}: 8
Y_{min}: -8 Y_{max}: 8

Curve Thickness: (1 - 5) 1
Length of a - d: (1 - 5) 5
Step Size: (0.1 - 1) 0.1