求極限limx-0 sin3x/sin5x

求極限limx-0 sin3x/sin5x


limx-0 sin3x/sin5x=limx-0 [(sin3x/3x)*3x]/[(sin5x/5x)/5x]=limx-0 [(sin3x/3x)*3x]/[(sin5x/5x)/5x]=3/5limx-0[(sin3x/3x)/(sin5x/5x)]=3/5[limx-0(sin3x/3x)]/[limx-0(sin5x/5x)]=3/5*1/2=3/5希望幫你解决了本題.