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Posted by on Tuesday, April 26, 2011 at 1:12pm.

Could someone answer this question so I understand it. Thanks

Find the indefinite integral.

x/ã3x^2+4 dx =

Simplify the answer. Use C as the arbitrary constant.

  • Math - , Tuesday, April 26, 2011 at 2:22pm

    Required:
    I=∫xdx/√(x²+4)

    Try u=x²+4, du=2xdx, xdx = du/2
    I=∫ (1/2)du/√(u)

    Use the power rule for u^(-1/2)
    I=u^(1/2)+C
    =√(x²+4) + C

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