Graph the equation. Include the coordinates of any local extreme points and inflection points.y = x + cos 2x, 0 ? x ? ?
A. local minimum: 
local maximum: 
inflection point: 
B. local minimum: (1.444, -0.246)
local maximum: (0.126, 1.031)
inflection points: (0.785, 0.393), (2.356, 1.178)
C. no local extrema
inflection point: 
D. local minimum: 
local maximum: 
inflection points: 
, 
Answer: D
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Use implicit differentiation to find dy/dx.2xy - y2 = 1
A. 
B. 
C. 
D. 
Solve the given trigonometric equation by use of a graphing calculator. Use values of x for 0 ? x < 2?.2 tan x + cot x = 5
A. 1.98, 2.93, 5.13, 6.07 B. No solution C. 0.22, 1.98, 4.30, 5.13 D. 0.22, 1.16, 3.36, 4.30
Provide an appropriate response.Determine the critical points of f(x, y) = 3x2 + 4y2 - 2x + 8y and also determine by the second-derivative test whether each point corresponds to a relative maximum, to a relative minimum, to neither, or whether the test gives no information.
What will be an ideal response?
Find an equation of the secant line containing (1, f(1)) and (2, f(2)).f(x) = x2 - 2x
A. y = x - 2 B. y = -x - 2 C. y = -x + 2 D. y = x + 2