Find fx(x, y).f(x, y) = x ln (2x + 5y)

A. fx(x, y) = ln (2x + 5y)
B. fx(x, y) = ln (2x + 5y) + 
C. fx(x, y) = 
D. fx(x, y) =  + ln (2x + 5y)

Answer: D

Mathematics

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A.  -  -  + C
B. 2 ln  -  -  + C
C. -  -  + C
D.  -  + C

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Use Euler's method to calculate the first three approximations to the given initial value problem for the specified increment size. Round your results to four decimal places.y' = 1 + , y(4) = -1, dx = 0.5

A. y1 = -1.2500, y2 = -0.3889, y3 = 1.1444 B. y1 = -1.2500, y2 = -0.2917, y3 = 0.5722 C. y1 = -0.9375, y2 = -0.2333, y3 = 0.3433 D. y1 = -0.6250, y2 = -0.1944, y3 = 0.2861

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Find the distance d(A, B) between the points A and B.A = (0, 0); B = (4, -9)

A.
B.
C. 97
D. 5

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