Find the general equation of the orthogonal trajectories of the curves for the given equations.The curves y = c cos x
A. y2 = 2 ln 
+ c
B. y2 = 2 ln 
+ c
C. y2 = ln 
+ c
D. y2 = 2 ln 
+ c
Answer: D
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Solve.The rate of return of certain investments increases as the risk factor of the investment increases. An investment with a risk factor of 2 has a rate of return of 5.0%. An investment with a risk factor of 18 has a rate of return of 20.0%. What is the average rate of return per unit of risk?
A. 0.72% per unit risk B. 0.94% per unit risk C. 1.38% per unit risk D. 1.07% per unit risk
Write an equation in slope-intercept form of a line satisfying the set of conditions.Slope - 
; b = 3
A. y = 
x + 3
B. y = - 
x + 3
C. y = 
x - 3
D. y = - 
x - 3
Express the vector as a product of its length and direction.- 6i - 
j
A. 
B. 
( -i - j)
C. 
D. 
Use properties of the order relation to solve the inequality. Express answer in simplified form.
x > 
A. x < 
B. x > 
C. x < 
D. x > 