Solve the system by the substitution method.
A. (1, 2), (-1, 2)
B. (1, 4), (4, 19)
C. (2, -1), (1, 2), (-1, 2), (-2, -1)
D. (2, -1), (-2, -1)
Answer: C
Mathematics
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Compute the gradient of the function at the given point.
A. ?f = 
j - 
k
B. ?f = - 
j + 
k
C. ?f = - 
j - 
k
D. ?f = - 
j - 
k
Mathematics
Find the linearization L(x) of f(x) at x = a.f(x) = tan x, a = ?
A. L(x) = x + ? B. L(x) = x - 2? C. L(x) = 2x - ? D. L(x) = x - ?
Mathematics
Find the slope of the line tangent tangent to the graph a the given point. y= x2 + 6x, x = -8
A. m = 16 B. m = -2 C. m = -16 D. m = -10
Mathematics
Find a rectangular equation for the curve and describe the curve.x = 3t, y = t + 7; -? < t < ?
A. y = 
x - 7; line
B. y = 
x + 7; line
C. y = 3x + 7; line
D. y = 3x - 7; line
Mathematics