Evaluate the integral. dx

A.  tan-1   + sin-1   + C
B. 128x +  ln  + C
C. sin-1   +   ln  + C
D.  tan-1   +   ln  + C


Answer: D

Mathematics

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Refer to a triangle ABC.If A = 34°, B = (x + 61)°, and C = (x + 51)°, find B and C.

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Solve the system of equations.7x + 7y + z = 1  x + 8y + 8z = 89x + y + 9z = 9

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Mathematics