For the following exercises, use the second derivative test to identify any critical points and determine whether each critical point is a maximum, minimum, saddle point, or none of these. 334. f ( x , y ) = x 2 + x y + y 2 − x − y + 1
For the following exercises, use the second derivative test to identify any critical points and determine whether each critical point is a maximum, minimum, saddle point, or none of these. 334. f ( x , y ) = x 2 + x y + y 2 − x − y + 1
For the following exercises, use the second derivative test to identify any critical points and determine whether each critical point is a maximum, minimum, saddle point, or none of these.
Consider the function f(x) = ax³ + bx where a > 0.
(a) Consider b > 0.
i. Find the x-intercepts.
ii. Find the intervals on which f is increasing and decreasing.
iii. Identify any local extrema.
iv. Find the intervals on which f is concave up and concave down.
(b) Consider b < 0.
i. Find the x-intercepts.
ii. Find the intervals on which f is increasing and decreasing.
iii. Identify any local extrema.
iv. Find the intervals on which f is concave up and concave down.
For the following exercises, use the second derivative testto identify any critical points and determine whether eachcritical point is a maximum, minimum, saddle point, ornone of these
For the following exercises, use the second derivative testto identify any critical points and determine whether eachcritical point is a maximum, minimum, saddle point, ornone of these.