lazykitten
Rank: Intermediate · 422 points · 72 answers
I am a senior high-schooler Please, someone, anyone, answer my questions, I beseech you. Seriously, I need answers.
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I really need help on how to do this derivative problem?
Question posted by lazykitten 3+ months ago | 1 answers | 
| Open
Related topics: problem, math, mathematics, calculus
lazykitten's response: y = 3x^5 – 25x^3 + 60x + 1 y' = 15x^4 – 75x^2 + 60 y'' = 60x^3 - 150x at x = -1 y' = 15 - 75 + 60 = 0 y'' = -60 - (-150) = 90 ergo, it is a stationary point that is concave up therefor it is a minimum
Algebraically solve nC7 = n+1C8?
Question posted by lazykitten 3+ months ago | 1 answers | | Open
Related topics: math, mathematics, help
lazykitten's answer: nC7 = n! / 7!(n-7)! n+1C8 = (n+1)! / 8!(n+1-8)! nC7 = n+1C8 Rearranging gives: nC7 - n+1C8 = 0 Rewrite in factorial form n! / 7!(n-7)! - (n+1)! / 8!(n+1-8)! = 0 Rewrite 8! in the denominator n! / 7!(n-7)! - (n+1)! / ...
1. (a) Show that the equation 4x=y^2 +z^2 +1 has no integer solutions. (b) Find all
Question posted by lazykitten 3+ months ago | 1 answers | | Open
Related topics: solution, equations, integer, mathematics
lazykitten's comment: This is a very good proof However you may want to state your reasoning clearly, as well as set out your proof by induction properly
Mathematics - Expand and simplify (2p+3)(p-6)?
Question posted by lazykitten 3+ months ago | 2 answers | | Open
Related topics: mathematics, answer
lazykitten's answer: (2p+3)(p-6) = 2p(p-6) +3(p-6) = 2p² - 12p + 3p - 18 =2p² - 9p - 18
Simple T/F question about Physics?
Question posted by lazykitten 3+ months ago | 1 answers | | Open
Related topics: plane, simple, point, down, energy, slide, cart, physics, question, velocity
lazykitten's answer: A cart slides down an inclined plane starting with velocity=0 at the highest point. At this point the kinetic energy is maximum. False - kinetic energy is calculated by E = 1/2 mv^2, normally, kinetic energy increases as objects move down an ...
2÷(2⁄5)/(4/25)-3/14 {1/7+3/25 (1/7+2)}? Whats the Answer and please explain how did you get it?
Question posted by lazykitten 3+ months ago | 1 answers | | Open
Related topics: studying, lecture, student, step, finance, economics, economic, answer
lazykitten's answer: There are a few programs and websites that can solve this for you showing the steps None I can recall so here we go Assuming the 2 is separate from the composite fraction 2÷ (2⁄5)/(4/25) - 3/14 {1/7+ 3/25 (1/7 +2)} = 2÷ ...
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