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Mathematics 16 Online
OpenStudy (anonymous):

lim x->0+ (lnx)squared/ ln(sinX)

OpenStudy (yttrium):

you know l'hospital's rule?

OpenStudy (anonymous):

yep thats what im lookin at but havin a hard time figuring out limit at 0+

OpenStudy (anonymous):

approaching 0+***

OpenStudy (anonymous):

keeps hangin me up on other problems also so wanna understand using this problem ... hopefully

OpenStudy (dumbcow):

i believe the limit is neg infinity you have to use L'hopitals rule as mentioned above then after taking derivatives and simplifying fraction use known limit \[\lim_{x \rightarrow 0}\frac{\sin x}{x} = 1\] that will make it possible to evaluate limit as x->0+

OpenStudy (anonymous):

so first indeterminate form would be 0/0?

OpenStudy (dumbcow):

actually for this case its infinity/infinity

OpenStudy (dumbcow):

either way its indeterminate

OpenStudy (anonymous):

sinx as x->0+ would be inifinity and ln of of this is inifinity also?

OpenStudy (anonymous):

yea i do kno its indeterminate

OpenStudy (anonymous):

just having a hard time vizualizing... feel like im havin a major brainfart

OpenStudy (dumbcow):

lim of ln(0) is neg infinity right? sin(0) = 0 so both top/bottom are infinity

OpenStudy (anonymous):

yes this is true

OpenStudy (anonymous):

thanks

OpenStudy (dumbcow):

yw

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