lim (x; 4) (2x^2-7x-4) / (x^3-64) lim (x; -2) (3-sqrt

im (x; 4) (2x^2-7x-4) / (x^3-64)=lim (x; 4) (2 (x-4) (x+0,5) / (x-4) (x^2+4x+16)=2 (x+0,5) / (x^2+4x+16)=2 (4+0,5) / (4^2+4*4+16)=2*4,5/48=9/48=3/16lim (x; -2) (3-sqrt (x+11) / (x^2-4)=lim (x; -2) (3-sqrt{x+11}) (3+sqrt{x+11}) / (x-2) (x+2) (3+sqrt{x+11})=lim (x; -2) (9- (x+11) / (x-2) (x+2) (3+sqrt{x+11})=lim (x; -2) (-2-x) / (x-2) (x+2) (3+sqrt{x+11})=lim (x; -2) (- (x+2) / (x-2) (x+2) (3+sqrt{x+11})=lim (x; -2) (-1) / (x-2) (3+sqrt{x+11})=-1/ (-2-2) (3+sqrt{-2+11})=-1/ (-4*(3+sqrt{9})=-1/ (-4*(3+3)=1/24 lim (x; 0) (1-cos6x) /x^2-не знаю