/tan(1 + x)\ lim |----------| x->5+\-10 + 5*x /
Limit(tan(1 + x)/(-10 + 5*x), x, 5)
/tan(1 + x)\ lim |----------| x->5+\-10 + 5*x /
tan(6) ------ 15
= -0.0194004127589833
/tan(1 + x)\ lim |----------| x->5-\-10 + 5*x /
tan(6) ------ 15
= -0.0194004127589833
= -0.0194004127589833