Please dont say just practice. Any specific tips? In my class we're not allowed to use calculators, consequently I am spending all my time row reducing to find basis, dependence, etc. Frankly, I am just horrible at it, I just cant see how to get to the end. I am a bit perplexed on the no-calculator-policy. I mean, sure doing things by hand is great, but it detracts us with the unending arithmetic. What is your view on it?