Find the rule: 27 0 () 0 () The sum is 27, (), () Using quadratic function to solve the problem···

Find the rule: 27 0 () 0 () The sum is 27, (), () Using quadratic function to solve the problem···

27,0,(27),0 (27).
Y = 27 / 2x (- 1) ^ n + 27 / 2 (x is multiplied by)
n=0 y=27
n=1 y=0
n=2 y=27
n=3 y=0
n=4 y=27

LIM (when x tends to zero) sin (4x) / under root (x + 2) - under root 2

1 / under root (x + 2) - under root 2 = under root (x + 2) + under root 2 / X
When x tends to zero, sin (4x) / is equivalent to 4x
Original formula = LIM (when x tends to 0) sin4x / x times LIM (when x tends to 0) under root (x + 2) + under root 2
=2 under 4 × 2 root = 2 under 8 root

LIM (3 * x ^ 2 + 5) / (5x + 3) sin (2 / x) = what?
LIM (3 * x ^ 2 + 5) / (5x + 3) * sin (2 / x) = what?

First question: is sin (2 / x) in numerator or denominator? It seems to be in denominator
The second question: how much does the independent variable x tend to? It seems that it should tend to infinity
If x tends to infinity, then sin (2 / x) can be replaced by 2 / X
In this way, the original formula becomes (6x ^ 2 + 10) / (5x ^ 2 + 3x), taking the limiting numerator denominator and dividing by x ^ 2
The result was 1.2