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comment Prove by induction that for the Fibonacci numbers $F(n)$ with $n \ge 6$, $F(n) \ge 2^{n/2}$
$F(k+1) = F(k) + F(k-1)$, and after you show that $n=7$ works, you can use induction to give inequalities for each term on the RHS.
Jun
24
comment A problem about prism with triangular bases
Please tell us what work you've done so far so we can better help you.
Jun
24
comment Two different trigonometric identities giving two different solutions
BTW, your computation of $\sin y$ from $\sin^2 y$ is incorrect.
Jun
24
answered Fields of fractions
Jun
23
comment The question is x+(x÷4)=60?
Can you tell us what you've tried? For starters, what do you get if you add $x$ and $\frac{x}{4}$?
Jun
22
reviewed Leave Closed Why aren't numerical solutions (Euler method) to Lotka-Volterra system (all parameters equal to 1) periodic?
Jun
22
reviewed Leave Open Find the volume of an object using integrals
Jun
22
reviewed Close minimum and maximum degrees boundaries turan graph
Jun
22
reviewed Leave Open Complexity of $\binom{n}{2}$
Jun
22
reviewed Leave Open 2-Sphere surface coordinate dimension
Jun
22
reviewed Leave Open Books for Problem-Solving Skills + How to Prepare for Putnam Competition
Jun
22
reviewed Close Class of cographs is induced-subgraph-closed?
Jun
22
reviewed Looks OK How to determine a shape is convex by giving polar form polynomial equation?
Jun
22
reviewed Close game board sequencing
Jun
22
reviewed Leave Open Optimal way to choose a number to be close to a randomly generated number
Jun
22
reviewed Close Help with exercise 2, chapter 2.5 (the first fundamental form), in Do Carmo (diff. geo.)
Jun
22
reviewed Leave Open Show that $P(\Omega)$ is a $\sigma$ algebra
Jun
22
reviewed Leave Open How do I evaluate this $ \lim \frac{\zeta(n)} {({n)!}} , n\to\infty $ if it was existed?
Jun
22
reviewed Leave Open Complex integration with trigonometric and logarithm
Jun
22
reviewed Close What is the percentage of probablity to select one of six items in a list at random?