The answer for this question is -6x-11
Answer:
Maximum
Step-by-step explanation:
dy/dx = 4 - 4x³ = 0
x³ = 1
x = 1
y = 4 - 1 = 3
There's only one stationary point: (1,3)
Nature:
d²y/dx² = -12x²
x = 1, so -12
Negative means it's maximum turning point
If directly proportional then y=kx so
14=k x (7) so k=2
Y=kx
Y=2x
30=2 x
Divide both by 2
X=15
(2x^4 + 3x^2)(x^2-1)
you multiply and you'll get:
2x^8-2x^4+3x^4-3x^2
then add the coefficients with x^4
= 2x^8+1x^4-3x^2
the coefficient for x^4 is 1, so the answer is B
For this problem, we use the formula for
radioactive decay which is expressed as follows:<span>
An = Aoe^-kt
where An is the amount left after time t, Ao is
the initial amount and k is a constant.
We calculate as follows:
An = Aoe^-kt
0.5 = e^-k(9000)
k = 7.7 x 10^-5
An = Aoe^-kt
.10 = e^-</span>7.7 x 10^-5<span>(t)
t = 29903.7 years</span>
