Complete the identity.
= ?
A. tan 
B. cot 
C. tan x + tan y
D. tan 
Answer: D
Mathematics
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Sketch trajectories of solutions of z? = Az given the eigenvalues and associated eigenvectors of A. Classify the origin and assess its stability.
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Solve the equation.9x + 6x + 6 = -9x
A. 
B. 4
C. - 
D. 1
Mathematics
Solve the problem.A random sample of 30 high school students is selected. Each student is asked how much time he or she spent watching television during the previous week. The following times (in hours) are obtained: 13, 21, 15, 18, 15, 13, 15, 14, 12, 18, 16, 14, 14, 13, 16, 15, 12, 12, 17, 14, 12, 14, 21, 16, 13, 17, 13, 16, 15, 14Construct a frequency distribution for the data.
What will be an ideal response?
Mathematics
Determine whether f is continuous at c.f(x) = 
;c = 0
A. continuous B. not continuous
Mathematics