not sure as to how im supposed to complete this

2 4. Express lim IME 1 +00 72 as a definite integral, / f(x)dx. 5. Express lim - 7-+00 7 sec (2 + # 2 ) - 2(2+21) as a definite integral, / f(x)dz. 6. Write as a single integral in the form [ fa)de