1) integral subscript 0 superscript infinity 4 e to the power ofnegative 4 x end exponent d x

2) integral subscript negative infinity end subscriptsuperscript 0 5 over open parentheses x minus 1 close parenthesessquared d x

(a) Rewrite the following improper integrals as the limit of aproper integral.

(b) Evaluate the integrals.