8,078 reputation
825
bio website linkedin.com/in/gt6989b
location New York, NY
age 36
visits member for 3 years, 4 months
seen 2 days ago

Mar
10
comment how to sketch a distribution function and calculate F(Y)
You draw the graph of $F(y)$ first and then differentiate to compute $f(y) = F'(y)$ and draw its graph as well.
Mar
10
revised Rules of congruent equations
added 14 characters in body
Mar
10
comment Prove the following sets equalities
These look great to me.
Mar
10
comment Complex exponentiation
wouldn't this just involve choosing a particular branch for the $\log(z)$?
Mar
10
comment Proof of “Eigenvectors corresponding to different eigenvalues are linearly independent.”
@jacob If all $c_k \equiv 0$, then $v_1 = \vec{0}$, so this cannot happen. Alternatively, if $\lambda_1 = \lambda_k \forall k$, then the eigenvectors $v_k$ turn out to correspond to the same eigenvalue.
Mar
10
comment Proof of “Eigenvectors corresponding to different eigenvalues are linearly independent.”
@jacob $v_k \lambda_k = A v_k$ and so $$\sum c_k v_k \lambda_k = \sum c_k A v_k = \sum A c_k v_k = A \sum c_k v_k$$ since matrix multiplication commutes with constant multiplication.
Mar
6
answered Comparing the shape of two probability distributions
Mar
6
revised Proving the existence of a neighborhood and left inverse using calculus in $\mathbb{R}^n$
added 70 characters in body; edited title
Mar
5
answered How would I convert from frequency back to percent?
Mar
5
answered Solve for Exponent in a summation
Mar
5
comment Approximation to $\sqrt{\cos(\theta)}$?
@user86418 indeed, thanks
Mar
5
revised Calculus Exponential Function Help
added 18 characters in body
Mar
5
comment Could someone walk me through this pde?
@FraserPrice no problem, glad to be of help
Mar
5
comment Could someone walk me through this pde?
@FraserPrice please see the edit.
Mar
5
revised Could someone walk me through this pde?
added 482 characters in body
Mar
5
answered Approximation to $\sqrt{\cos(\theta)}$?
Mar
5
answered Could someone walk me through this pde?
Mar
5
revised Could someone walk me through this pde?
added 15 characters in body
Mar
5
comment Logarithmic Differentiation
@Phantom yes, exactly
Mar
5
revised Logarithmic Differentiation
added 450 characters in body