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Q.262
lim
?→∞
2? − 5
4?


Sol.
lim
?→∞
2∞ − 5
4∞



∞
∞
????

2
4
=
1
2


Q.264
lim
?→−∞
3?3 − 2?
?2 + 2? + 8


Sol.
lim
?→−∞
3∞ − 2?
?2 + 2? + 8


Numerator is grater then denominator, so limit is not existing.


Q.265
lim
?→−∞
3?4 − 4?3 + 1
2 − 2?2 − 7?4



Sol.
lim
?→−∞
3?4 − 4?3 + 1
−7?4 − 2?2 + 2
lim
?→−∞
3∞ − 4?3 + 1
−7∞ − 2?2 + 2


∞
∞
????

3
−7
=
3
−7


Q.316: - You are constructing a cardboard box with the dimension 2m
by 4m. You then cut equal size squares from each other so you may fold
the edges what are the...