Can someone help me to answer all the questions correctly, please, and explain it. Also, would you please in a way I can understand the writing, please.

This is Calculus 1.

1.

Find f. f'(t) = - 20 1 + +2 f(1) = 0 f(t) = 20 tan (t) - 10n XUse the Definition to find an expression for the area under the graph of f as a limit. Do not evaluate the limit. f( x) = x2 + V1+2x, 55x57 lim 5 + (i - 1) 2 2 +1 1+2 5+(i-1) IN n -co n XExpress the integral as a limit of right endpoint Riemann sums. Do not evaluate the limit. 5 5 + x2 dx w 2i 2 2i lim 5+ 3+ 3 + n n n - 00 i = 1 X