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Let a, b, c be real numbers such that min(a + 24b + 38c, a + 16b + 42c) ≥ 2021. Prove that a^2 + b^2 + c^2 > 2021.

I know that we have to break it into two cases, one when a + 24b + 38c is the minimum, and the other when read more ..

cooooooolgurl123 Jan 16, 2021

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PLEASE HELP THANK YOU!

Let A be a matrix whose first column is col1 and whose second column is col2.
Consider points P,Q,R,S and T,U,V,W in the input and output grids below:

How read more ..

cooooooolgurl123 Oct 9, 2020

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Let A, B, C, and D be the following matrices:

Let V be the vector below:

Consider read more ..

cooooooolgurl123 Oct 2, 2020

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Let A be a matrix, and let x and y be linearly independent vectors such that
Then we have that
for some scalars a and b. Find the ordered pair (a,b).

cooooooolgurl123 Sep 25, 2020

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Let A be a matrix and x be a non-zero vector such that
Then we have that
some value of a. What is a equal to?

cooooooolgurl123 Sep 25, 2020