A function is given by
h(k)=∫∞0xke−xdx.
Its values may be found in tables. Make the change of variables y=xln(5) to express I=∫∞0x25−xdx as a constant C times h(2). Find C.
Given that
By the change of variables and limits of integration, we get that
Substituting the above values, we get that
Hence, the constant C is
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