3. Functions
Intro to Functions & Their Graphs
3. Functions
Intro to Functions & Their Graphs: Study with Video Lessons, Practice Problems & Examples
Back to all problems
185PRACTICE PROBLEM
Evaluate the value of the following function for x = 6.4
![{"mathml":"<math style=\"font-family:stix;font-size:16px;\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mstyle mathsize=\"16px\"><mi>f</mi><mfenced><mi>x</mi></mfenced><mo>=</mo><mfenced open=\"{\" close=\"\"><mtable columnalign=\"left\"><mtr><mtd><mn>8</mn><mo> </mo><mi>if</mi><mo> </mo><mn>0</mn><mo><</mo><mi>x</mi><mo>≤</mo><mn>4</mn><mo>,</mo></mtd></mtr><mtr><mtd><mn>15</mn><mo>-</mo><mn>3</mn><mfenced open=\"[\" close=\"]\"><mfenced open=\"[\" close=\"]\"><mrow><mn>4</mn><mo>-</mo><mn>8</mn><mi>x</mi></mrow></mfenced></mfenced><mo> </mo><mi>if</mi><mo> </mo><mi>x</mi><mo>></mo><mn>4</mn></mtd></mtr></mtable></mfenced></mstyle></math>","truncated":false}](https://lightcat-files.s3.amazonaws.com/problem_images/a33ce32731c8f89b-1678452346846.jpg "f open parentheses x close parentheses equals open curly brackets table row cell 8 space if space 0 less than x less or equal than 4 comma end cell row cell 15 minus 3 open square brackets open square brackets 4 minus 8 x close square brackets close square brackets space if space x greater than 4 end cell end table close")
where [[.]] is the greatest integer function.
Evaluate the value of the following function for x = 6.4
where [[.]] is the greatest integer function.