Find the axis of symmetry of the quadratic function.f(x) = -(x + 5)2 + 4
A. x = -5
B. x = -4
C. x = 5
D. x = 4
Answer: A
Mathematics
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Find the derivative of the function at P0 in the direction of u.f(x, y) = -7x2 + 6y, P0(4, -6), u = 3i - 4j
A. - 
B. - 
C. - 
D. - 72
Mathematics
Perform the indicated operation. Express your answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Mathematics
Use the quadratic formula to find the exact solutions.x2 + 5x = 14
A. -7, 2 B. 7, 2 C. -7, -2 D. -2, 7
Mathematics
Find all values of ? in [0°, 360°) that satisfy the equation.2 sin 2? - 
= 0
A. {30°, 150°, 210°, 330°} B. {30°, 60°, 210°, 240°} C. {60°, 120°, 240°, 300°} D. {60°, 150°, 240°, 300°}
Mathematics