xsinx2x | ||
limx→0− | ||
1−cos2x |
xsin2x | ||
limx→0− | cos jest do potęgi 2 | |
1−cos2x |
x(2cosx sinx) | 2xcosx | x | ||||
lim | = lim | = 2lim | * lim cosx = | |||
sin2x | sinx | sinx |
x | ||
2 lim | = 2*1 = 2 | |
sinx |
x*2sinx*cosx | ||
limx→0− | = | |
sin2x |
2*x*cosx | x | |||
=limx→0− | =lim x→0[ | ]*(2cosx)=1*2=2 | ||
sinx | sinx |