Answer:
Step-by-step explanation:
we are given an algebraic function in x, such that
To find when second derivative >0
For this let us find first and second derivative by successive differentiation.
when ii derivative >0 we have
60x^3-30>0
f"(x)>0 in
Answer:
Step-by-step explanation:
The general formula for this sequence is a(n) = a(1)*(-1/4)^(n - 1). We don't yet know a(1).
If a(3) = 128, then 128 = a(1)*(-1/4)^(3 - 1), or
128 = a(1)*(1/16)
and so a(1) = 128/16
resulting in the specific formua a(n) = 8(-1/4)^(n - 1)
Now let's find a(7):
a(7) = 8(-1/4)^1 * (-1/4)^(6)
or
a(7) = 8(-1/4)^7
Dear!
In my best knowledge,your ans is b.
