How to plot this function?

fun1=@(l,ki) ((1/10^(l + 1)*ki*l*sin((pi*l)/2))/((ki*cos((pi*l)/2))/10^l + 1) - (1/10^(l + 1)*ki^2*l*cos((pi*l)/2)*sin((pi*l)/2))/(10^l*((ki*cos((l*pi)/2))/10^l + 1)^2))/((1/10^(2*l)*ki^2*sin((pi*l)/2)^2)/((ki*cos((l*pi)/2))/10^l + 1)^2 + 1)
fimplicit(fun1)

Even I have tried giving the ranges of ki and l in fimplicit operator, But the graph appears more or less the same having straight lines. Do you know how to solve this issue?