Thread: Limits

Hi All,
Can anyone help me to solve this...........


Find:
Lim 23x3 + 45x
x®µ 78x3 + 9




Thanks
-Arun

Hello, Arun!

. . . . . 23x³ + 45x
. lim . --------------
x→∞ . .78x³ + 9

Divide numerator and denominator by x³

. . . . . 23 + 45/x² . . . . . . . 23 + 0 . . . . 23
. lim . ------------- . = . lim . --------- . = . ---
x→∞ . 78 + 9/x³ . . . .x→∞ .78 + 0 . . . . 78