/sci/ - Science & Math

>>10689474
Can someone tell me how they got to 9/10 x 3/5? Considering that alpha was a constant that clearly was not defined in any situation it seems like they just said 'lol stick any number in, that'll work' and went with it. God I fucking hate this so much, keep going through these textbooks but can barely answer a question let alone get it right, I read the methods, the examples, numerous times very CLEARLY and it doesn't fucking work - I apply what they teach me and each question is completely different from the examples and make you apply shit that is from fucking anywhere in the spec. Like wholly shit I need practice with the basics of a new concept BEFORE I start throwing god-knows-what into it. I cannot grasp stuff, yes I'm a retarded fucking failure and I want to throw myself off a bridge, I'm 20 and still cannot grasp what bed-shitting toddlers can do, its fucking pathetic.