f(x,y)=sin(2x)sin(y)
intervals for x and y:
-π/2 ≤ x ≤ π/2 and -π ≤ y ≤ π
find extrema and saddle points
In the solution, I mainly interested how to
findcritical points in case of the system of trigonometric
equations (fx=0 and fy=0).
,
f(x)=e^x/(3+e^x)
Find the first derivative of f.
Use interval notation to indicate where f(x) is increasing.
List the x coordinates of all local minima of f. If there are no
local maxima, enter 'NONE'.
List the x coordinates of all local maxima of f. If there are no
local maxima, enter 'NONE'.
Find the second derivative of f:
Use interval notation to indicate the interval(s) of upward
concavity of f(x).
Use interval notation to indicate the interval(s) of downward
concavity...
(a) Find the Riemann sum for
f(x) = 4
sin(x), 0 ≤ x ≤
3π/2,
with six terms, taking the sample points to be right endpoints.
(Round your answers to six decimal places.)
R6 =
(b) Repeat part (a) with midpoints as the sample points.
M6 =
If m ≤ f(x) ≤ M for
a ≤ x ≤ b, where m is the
absolute minimum and M is the absolute maximum of
f on the interval [a, b], then
m(b...
(a) For f(x) = 1 4 x 4 − 6x 2 find the intervals where f(x) is
concave up, and the intervals where f(x) is concave down, and the
inflection points of f(x) by the following steps:
i. Compute f 0 (x) and f 00(x).
ii. Show that f 00(x) is equal to 0 only at x = −2 and x =
2.
iii. Observe that f 00(x) is a continuous since it is a
polynomial. Conclude that f 00(x)...