The half-life of radium-226 is 1620 yr. Given a sample of 1 g of radium-226, the quantity left Q t (in g) after t years is given by Q t = 1 2 t / 1620 . a. Convert this to an exponential function using base e . b. Verify that the original function and the result from part (a) yield the same result for Q 0 , Q 1620 , and Q 3240 . (Note: There may be round-off error.)
The half-life of radium-226 is 1620 yr. Given a sample of 1 g of radium-226, the quantity left Q t (in g) after t years is given by Q t = 1 2 t / 1620 . a. Convert this to an exponential function using base e . b. Verify that the original function and the result from part (a) yield the same result for Q 0 , Q 1620 , and Q 3240 . (Note: There may be round-off error.)
The half-life of radium-226 is 1620 yr. Given a sample of 1 g of radium-226, the quantity left
Q
t
(in g) after t years is given by
Q
t
=
1
2
t
/
1620
.
a. Convert this to an exponential function using base e.
b. Verify that the original function and the result from part (a) yield the same result for
Q
0
,
Q
1620
,
and
Q
3240
.
(Note: There may be round-off error.)
Write the given third order linear equation as an equivalent system of first order equations with initial values.
Use
Y1 = Y, Y2 = y', and y3 = y".
-
-
√ (3t¹ + 3 − t³)y" — y" + (3t² + 3)y' + (3t — 3t¹) y = 1 − 3t²
\y(3) = 1, y′(3) = −2, y″(3) = −3
(8) - (888) -
with initial values
Y
=
If you don't get this in 3 tries, you can get a hint.
Question 2
1 pts
Let A be the value of the triple integral
SSS.
(x³ y² z) dV where D is the region
D
bounded by the planes 3z + 5y = 15, 4z — 5y = 20, x = 0, x = 1, and z = 0.
Then the value of sin(3A) is
-0.003
0.496
-0.408
-0.420
0.384
-0.162
0.367
0.364
Question 1
Let A be the value of the triple integral SSS₂ (x + 22)
=
1 pts
dV where D is the
region in
0, y = 2, y = 2x, z = 0, and
the first octant bounded by the planes x
z = 1 + 2x + y. Then the value of cos(A/4) is
-0.411
0.709
0.067
-0.841
0.578
-0.913
-0.908
-0.120
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.