+0

# hello i need HELP!

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(oo=inf)

Limx-->+oo (5^x - 7^x)

# $$lim_{x\rightarrow +oo (5^x - 7^x)}$$  i wan to find the lim please help me!

Guest Jan 16, 2016

#2
+87576
+10

Here's a graphical solution: https://www.desmos.com/calculator/f7c6wqsvxl

Note....as x grows larger and larger, the value of 7^x  is much greater than 5^x......so......this function approaches [  -inf  ]  as x grows sufficiently large

Thus......the limit does not exist

CPhill  Jan 16, 2016
#1
+5

Believe or not, when I plug it into my computer software, it comes back with this succinct message:

(no interesting limit points found)

Guest Jan 16, 2016
#2
+87576
+10

Here's a graphical solution: https://www.desmos.com/calculator/f7c6wqsvxl

Note....as x grows larger and larger, the value of 7^x  is much greater than 5^x......so......this function approaches [  -inf  ]  as x grows sufficiently large

Thus......the limit does not exist

CPhill  Jan 16, 2016