# Integration by u-substitution

Integration by u-substitution practice problems.

### Problem

Let space, f, space be a continuous function with the property that space, space, integral, start subscript, 0, end subscript, start superscript, 6, end superscript, f, left parenthesis, x, right parenthesis, d, x, equals, 5. Determine the value of space, space, integral, start subscript, 0, end subscript, start superscript, 18, end superscript, f, left parenthesis, start fraction, x, divided by, 3, end fraction, right parenthesis, d, x, space.
Please choose from one of the following options.
Get 3 answers correct in a row