Jean Marie

 76 Why does Friedberg say that the role of the determinant is less central than in former times? 23 Is it possible to have a $3 \times 3$ matrix that is both orthogonal and skew-symmetric? 21 Three bullets are shot in a sphere. What is the probabilty that all of them end up in the same hemisphere? 18 Find the determinant of $I + A$ 16 Find all functions $f$ such that $f(x)+f(\frac{1}{1-x})=x$

Reputation (31,623)

 +10 Approximate $f(t) = 1-|2t-5|$ in $[2,3]$ by $p\in P_2$ by using the least squares method +30 How many terms of the Maclaurin series for $\ln(1+x)$ do you need to use to estimate $\ln(1.4)$ to within $0.001$? +25 Show what is the limit of the function in the following ODE system +15 How can I transform $r=\theta$ to a parametric equation?

Questions (16)

 18 Japanese theorem, in its extended form 12 Ill-known/original/interesting investigations on/applications of inversion (the geometric transform) 12 Looking for references about a tessellation of a regular polygon by rhombuses. 7 Looking for examples of Discrete / Continuous complementary approaches 6 Connection between the spectra of a family of matrices and a modelization of particles' scattering?

Tags (467)

 546 linear-algebra × 303 145 algebra-precalculus × 61 402 matrices × 187 111 trigonometry × 76 294 geometry × 253 109 polynomials × 51 196 calculus × 124 102 probability × 53 177 determinant × 36 101 real-analysis × 78

Accounts (12)

 Mathematics 31,623 rep 42355 History of Science and Mathematics 211 rep 14 Stack Overflow 158 rep 5 Computational Science 101 rep MathOverflow 101 rep 2