Express the number in scientific notation.270,000
A. 2.7 x 106
B. 2.7 x 105
C. 2.7 x 10-6
D. 2.7 x 10-5
Answer: B
Mathematics
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Find the quadratic approximation of f at x = 0.f(x) = tan-1 9x
A. Q(x) = 1 + 9x2
B. Q(x) = 1 - 9x2
C. Q(x) = 9x
D. Q(x) 1 + 
x2
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Sketch the surface z = f(x,y).f(x, y) = -x2 - y2
A. 
B. 
C. 
D. 
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Graph the exponential function.y = 5-x
A. 
B. 
C. 
D. 
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Test the vector field F to determine if it is conservative.F = -cos x cos yi + sin x sin yj - sec2 zk
A. Not conservative B. Conservative
Mathematics