Practice problem
What's the coefficient of x10x^{10}x10 in the Maclaurin series of (1−3x+2x2)−1(1 - 3x + 2x^2)^{-1}(1−3x+2x2)−1?
Source: HMMT February 2001
2047
2034
2019
2001
Type a concept, like “slope” or “photosynthesis”.
