Ido not understand this integration problem. i understand why they made u, du, and dx what they did, no problems. but isnt the integral of (u+1)/2 * u^(1/2) du/2
equal 1/4 integral u * u^(1/2)? i do not understand where the second line comes from with the u^(3/2)+u^(1/2).

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?