Limit x->infinity

**Petrus** · February 11th 2013, 03:54 AM

Hello im stuck with a question
limit x->infinity $(sqrt(x^2+ax)-sqrt(x^2+bx))$
Picture show My progress

**Plato** · February 11th 2013, 04:02 AM

Originally Posted by Petrus

Hello im stuck with a question
limit x->infinity $(\sqrt{x^2+ax}-\sqrt{x^2+bx})$

Multiply by $\frac{\sqrt{x^2+ax}+\sqrt{x^2+bx}}{\sqrt{x^2+ax}+ \sqrt{x^2+bx}}$

**Petrus** · February 11th 2013, 04:03 AM

Thats what i did but im doing something wrong, can u plz look at My picture i hope u can se it

**Petrus** · February 11th 2013, 04:05 AM

Nvm solved My misstake.. The misstake i did was i thought ax/x-bx/x=0-0 i was not thinking Clear there...btw ty for the help Plato

Thread: Limit x->infinity