Draw a function image：

y=2/(1+exp(-(x-8)))+1

Draw a function image：

y=x^0;x^0.1;x^0.2;x^0.3;x^0.4;x^0.5;x^0.6;x^0.7;x^0.8;x^0.9;x^1;x^1.1;x^1.2;x^1.3;x^1.5;x^1.8;x^2.1;x^2.4;x^2.7;x^3;x^3.3;x^3.8;x^4.3;x^5;x^5.6;x^6;x^6.4;x^6.8;x^7.3;x^8

Draw a function image：

y=cosx^2

Draw a function image：

y=x^2-1;x;2-x

Draw a function image：

y=tan(5x)
y=x
y=sinx