title: Mathematica integration does not return value
body: <p>If I integrate the following, I get answer:</p>
  
  <pre><code>Integrate[(nor*x^ap*(1 - x)^bp*(1 - cp*x)*Exp[-t*al]), {x, 0.001, 1}, 
   Assumptions -&gt; {-1 &lt; nor &lt; 1, 0 &lt; ap &lt; 3, 0 &lt; bp &lt; 5, 0 &lt; cp &lt; 5, 
     0 &lt; t &lt; 2, 0 &lt; al &lt; 1}]
  </code></pre>
  
  <p>and the answer is</p>
  
  <pre><code>E^(-al t) nor ((1. Gamma[1 + ap] Gamma[1 + bp])/Gamma[2 + ap + bp] - (
     1. cp Gamma[2 + ap] Gamma[1 + bp])/Gamma[3 + ap + bp] + 
     0.001^ap (-((0.001 Hypergeometric2F1[1 + ap, -bp, 2 + ap, 0.001])/(
         1. + ap)) + (
        1.*10^-6 cp Hypergeometric2F1[2 + ap, -bp, 3 + ap, 0.001])/(
        2. + ap)))
  </code></pre>
  
  <p>But if I want to do this, </p>
  
  <pre><code>Integrate[(nor*x^ap*(1 - x)^bp*(1 - cp*x)*Exp[-t*al*(1 - x)]), {x, 
    0.001, 1}, 
   Assumptions -&gt; {-1 &lt; nor &lt; 1, 0 &lt; ap &lt; 3, 0 &lt; bp &lt; 5, 0 &lt; cp &lt; 5, 
     0 &lt; t &lt; 2, 0.5 &lt; al &lt; 1}]
  </code></pre>
  
  <p>it doesn't give an final expression. It gives:</p>
  
  <pre><code>Integrate[(nor*x^ap*(1 - x)^bp*(1 - cp*x)*Exp[-t*al*(1 - x)]), {x, 
    0.001, 1}, 
   Assumptions -&gt; {-1 &lt; nor &lt; 1, 0 &lt; ap &lt; 3, 0 &lt; bp &lt; 5, 0 &lt; cp &lt; 5, 
     0 &lt; t &lt; 2, 0.5 &lt; al &lt; 1}]
  </code></pre>
  
  <p>which is the same as the integral.
  Could you please help me figuring out how to get answer for the second integral with additional (1-x) in the exponential?</p>