**A**

we ignore the constants and lower order term.

what's the answer given?

0 votes

Consider the following function $f(x)$ = $x^8$+6$x^7$-9$x^5$-$x^4$+2$x^2$-18. Which of the following is true if x is greater than 56?

- $f(x)$ = O($x^8$)
- $f(x)$ = Ω($x^8$)
- $f(x)$ = θ($x^8$)
- $f(x)$ = None of the above.

0

Should be C as for large enough vale of $x$, $f(x)$ has to be greater than $x^8$ (taking constant as 1 for lower bound).

0

I too think the answer should be A, obviously for the same reason as stated by Utkarsh

But C is provided as answer.

But C is provided as answer.