title: multiply constant with vector in breeze
body: <p>I am new to breeze. Please help with this formula</p>
  
  <p>I have a Vector called data, a constant called alpha, and another Vector called delay. I want to generate an output Vector adjData.</p>
  
  <p>The elemental operation is</p>
  
  <pre><code>adjData_i = (1 - alpha * delay_i)Data_i
  </code></pre>
  
  <p>how to express this using vector operation in Breeze?</p>