Math Is Fun Forum

Janiffer

Member

Registered: 2008-04-26

Posts: 12

Intermediate forms

How do you finf the limits for the following

a) lim (as x approaches 1) ((ln(sinh(x-1))/(ln ((x^2)-1))?

b) lim( x approaches 0) xln(tanh(x))?

Dragonshade

Member

Registered: 2008-01-16

Posts: 147

Re: Intermediate forms

hint : apply L' Hospital rule

Janiffer

Member

Registered: 2008-04-26

Posts: 12

Re: Intermediate forms

How??

Dragonshade

Member

Registered: 2008-01-16

Posts: 147

Re: Intermediate forms

The first one, I dont know if I am allowed to use L'hospital's rule twice, if so, after taking derivative twice it became like this

Last edited by Dragonshade (2008-05-09 03:32:15)

Janiffer

Member

Registered: 2008-04-26

Posts: 12

Re: Intermediate forms

Thanks a lot!!! that helped;))