Question

limtan4/x求极限

Answer 1

lim[x→π/4]tan2xtan(π/4-x)=lim[x→π/4][数学分析中求极限的方法总结 1 利用极限的四则运算法则和简单技巧 极限的四则运算法则叙述如下: 定理 1.1:如果 lim f(x)=, lim g(x)= xx0 xx0 (1) lim f (x) g(x) lim f (x) ...sin2xsin(π/4-x)]/[cos2xc...

Answer 2

高数 求极限一题 lim (ln tan3x)/(ln tan 4x) (x->0+) lim[x→0] (lntan3x)/(lntan4x) 洛必达法则 =lim[x→0] (3sec²3x/tan3x)/(4sec²4x/tan4x) =(3/4)lim[x→0] (sec²3xtan...

Answer 3

39. lim sin 5r 41. lim tan 6 40. lim Sin 42. i 44. , lim cos θ- sin 6 0 sin 2t sin 3x sin 3x sin θ 45. limtan4 47. lim- 2A2- 49. lim 46. lim csc x sin( sin 6-0 θ + tan θ cos θ-1 48. lim 1 - tan x 50. lim x→π/4 sin x-cosx 51-52 Find the given derivative by finding the

Answer 4

lim x→0 (tan4x)/x =lim x→0 4*(tan4x)/4x =4*lim x→0 (tan4x)/4x =4*lim y→0 (tany)/y (令y=4x,当x→0时,y→0) =4*1 =4

Answer 5

limtan4(x-2)/x-2=lim4(x-2)/x-2=4