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Problem Solution
% Correct
d/dx [ sin(x) ] cos(x)

89.7% d/dx [ -cos(x) ] sin(x)

89.2% d/dx [ 3x ] 3

88.4% d/dx [ 7x + 1 ] 7

88.1% d/dx [ 9x + 4 ] 9

88% d/dx [ e^{x sup>] at x = 1} e

80.9% d/dx [ x^{5sup> ] at x = 1} 5

80.7% d^{2sup>/dx2sup> [ 2x ]} 0

78.6% d^{2sup>/dx2sup> [ 2x2sup> ]} 4

76.1% d^{3sup>/dx3sup> [ 1 ]} 0

75.9%

Problem Solution
% Correct
d^{2sup>/dx2sup> [ x3sup> ]} 6x

74.7% d/dx [ e^{2x sup>] at x = 0} 2

72.4% d^{3sup>/dx3sup> [ x4sup> ]} 24x

67.7% d/dx [ 5x^{2sup> + 4 ]} 10x

63.9% d/dx [ 7x^{2sup> + 72 ]} 14x

61.9% d^{3sup>/dx3sup> [ 2x3sup> + 7x ]} 12

60.6% √ ( d/dx [ tan(x) ] ) sec(x)

51.4% d/dx [ 3x^{3sup> ] at x = 2} 36

50.8% d/dx [ x^{4sup> ] at x = 2} 32

45.2% d/dx [ ln|x| ] 1|x

39%

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