Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.f(x) = 2x3 - 9x2 + 7x + 5
A. 0 positive; 1 or 2 negative
B. 0 or 1 positive; 0 or 1 negative
C. 0 or 1 positive; 2 negative
D. 0 or 2 positive; 1 negative
Answer: D
Mathematics
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A. a(b2 + 4ab)(b2 - 4ab) B. ab4 - 16a3b2 C. ab2(b - 4a)2 D. ab2(b + 4a)(b - 4a)
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Find and classify the relative extrema and saddle points of the function f(x,y) =  figure.png)
sin4y for x ? 0 and 0 ? y ? = figures 4.png)
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Mathematics
Provide an appropriate response.Find d998/dx998 (cos x).
Fill in the blank(s) with the appropriate word(s).
Mathematics
Determine whether the graph of the equation is a circle or an ellipse.9x2 + 90x + 25y2 - 50y + 25 = 0
A. Ellipse B. Circle
Mathematics