lim(x→π/4)(sin2x)^3极限是多少?

lim(x→π/4)(sin2x)^3极限是多少? 求极限 lim x→π/2 (sin2x)^3 lim x→0 根号(1+x^2)-1/x lim x→正无穷 sin2x/3x =什么 求lim(x→0) (x+sin2x)/(x-sin2x) lim[x→∞](sin2x)/x=? lim sin2x/3x x趋向0 求lim(x→π/4) （sin2x-cos2x-1）/(cosx-sinx)的极限 求极限lim(x→π/4) 1+sin2x/1-cos4x lim（ x→0）sin2x / tan3x sin2x lim ------- x→0 tan3x 求极限 lim(sin2x/sin3x) x->π lim(x->0) (sin2x)/(tan2x)2/3 帮忙`````````一些求极限的数学题一.求极限1.lim 3x^+2x+1x→12.lim x^+3x+2/x的三次方+4x^+5x→03.lim x^-1/x-1x→14.lim x^-3x+2/1-x^x→15.lim sin2x/5xx→06.lim sin3x/tan2xx→07.lim (1+x)的x分之2次方x→08.lim （1+2/n)的n次 计算极限lim(x→0）[1-x^2-e^(-x^2)]/(sin2x)^4 lim(x->0)(tan3x+2x)/(sin2x+3x) 求下列极限值1.Lim sin2x∕3x x→02.Lim tan5x∕xx→0 求极限lim x→0 (sin2x)^2/3x^2 求极限 lim(sin2x/sin3x)x->0x→0