Use a calculator to approximate the area of the surface generated when the given curve is revolved about the x-axis. Round to two decimal places when necessary.y = ln x6 on [1, 
]
A. 29.05
B. 15.18
C. 2.42
D. 4.62
Answer: A
Mathematics
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Find all the second order partial derivatives of the given function.f(x, y) = x ln (y - x)
A. 
= 
; 
= - 
; 
= 
= 
B. 
= 
; 
= 
; 
= 
= 
C. 
= 
; 
= - 
; 
= 
= - 
D. 
= 
; 
= - 
; 
= 
= 
Mathematics
Solve the problem.The curves y = ax2 + b and y = 2x2 + cx have a common tangent at the point (-1, 0). Find a, b, and c.
A. a = 1, b = 0, c = 2 B. a - 2, b = 1, c = -1 C. a = -1, b = 1, c = -2 D. a = 1, b = -1, c = 2
Mathematics
Find the slope-intercept form of the equation of a line whose x-intercept and y-intercept are given.
A. y = - 
x - 9
B. y = 
x - 9
C. y = 
x + 9
D. y = - 
x + 9
Mathematics
Simplify.
A. - 
B. - 
C. y
D. -y
Mathematics