tangent line, I'm going to call this the derivative of f. Let me write that down. And I'm going to say that this is equal to f prime of x. And this is going to be another function. Because remember, the slope changes at every x-value. No matter what x-value you pick, the ...
Salman Khan talks about how and why he created the remarkable Khan Academy, a carefully structured series of educational videos offering complete curricula in math and, now, other subjects. He shows the power of interactive exercises, and calls for teach
Theyre doing Khan Academy, theyre doing that software, for roughly half of their math class. And I want to make it clear, we dont view this as the complete math education. What it does is -- and this is whats happening in Los Altos -- it frees up time. This is the blocking and ...