## 400 Reputation

16 years, 322 days

## how to find explicit expression with map...

Maple

We want to fit

f(x) = a_0 + a_1 *x + a_2 * x^2 + ... + a_n * x^n

to the data (x_i,f(x_i)) for i = 0 ... n.

It will give rise to the following system

[ a_i ] = [A]^{-1} * [ f(x_i)].

Here [a_i] = [ a_1 a_2 a_3 ... a_n],

[A] = [ 1 x_0 x_0^2 ... x_0^n ; 1 x_1 x_1^2 ... x_1^n ; 1 x_2 x_2^2 ... x_2^n ; ... ; 1 x_n x_n^2 ... x_n^n]

and

[f(x_i)] = [f(x_0) f(x_1) f(x_2) ... f(x_n)].

## how to solve the following inequalities?...

Maple

i am unable to solve the following inequalities:

ineq1 := (4-(3/2)*q+(1/2)*sqrt(28-24*q+5*q^2))*(1/2-(1/2)*q)

ineq2:=(3-q+(1/4)*sqrt(84-58*q+10*q^2)+(1/4)*sqrt((4-2*q)*(3-q)))*(1/2-(1/2)*q):

solve(ineq1<1,q)

solve(ineq2<1,q)

"Warning, solutions may have been lost"

## How to program the following three-steps...

Maple

How may I program the following with Maple?

(1) Define the function:

H(p) := p * c1 + p^2 * c2 + p^3 * c3  + ......

(2) Now construct the following expression:

(1-p) [ v''' + 1 ]  = H(p) [ v''' - 25 * v' + 1]

Here, v is some funciton of x.

(3) Now assume: v = u0 + u1 * p + u2 * p^2 + ...

and substitute this into the expression defined at the point (2).

## How to program it with Maple?...

Maple

Hello Friends,

I have the equation

## what is the asymptotic constant of...

Maple

I am interested in finding the asymptofic constant (Big O(1/n^(2m+2)) for the following expansion

Upon using the preceding command in the maple i get

Error, (in asympt) unable to compute series

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