Draw a function image：

y=cos5/4π

Draw a function image：

y=2x^2+11x-3;x^2-5x-4;1.5x^2+2x-8

Draw a function image：

y=（x-1）/cosx

Draw a function image：

y=xx/x-10

Draw a function image：

y=(3/2)^x;(2/3)^x;(4/3)^x;x^x;x^(3/2);x^(2/3);x^(1/2);x!;x;log2(x);x/logx(2);(log2(x))^2;log2(log2(x));xlog2(x);x^log2(x);