16 years, 7 days

## MaplePrimes Activity

### These are questions asked by Scimann

Maple

What did I do wrong, or why does Maple 11's cumulative distribution function (cdf) for Statistics:-GammaDistribution differ from what theory suggests? http://www.mapleprimes.com/files/7371_GAMMA_CDF.mw Thanks heaps.

## rsolve - a question...

Maple

Can maple rsolve equations of the type y(t)=sum(b(t),1..y(t-1)) for y? Thanks.

## fsolve: how to solve?...

Maple

Why lhs cannot be resolved? Well, it can be, in fact, if the interval is t=0..0.03, say, but I need to use t=0..infinity, or t=0..smthbigenough. Thanks.

fsolve(1-erfc((1/2)*sqrt(2)*sqrt(t)) = 0.5e-1, t, t = 0 .. infinity) = fsolve(1-erfc((1/2)*sqrt(2)*sqrt(t)) = 0.5e-1)

## faster algorithm?...

Maple

My algorithm counting the number of data points between consequitive positive integers in a list seems to be very slow. I suspect there may be a considerable improvement - please help see how to achieve it. If it can be done faster with zeros only, let it be so. See Thanks.

## Poisson Mean Restrictions?...

Maple

When the parameter of the Poisson distribution is less than

Statistics:-Sample(RandomVariable(Poisson(10^(-307))), 1)

or greater than

Statistics:-Sample(RandomVariable(Poisson(10^6)), 1),

error NE_REAL_ARG_LE or NE_REAL_ARG_GT appear, respectively.

Is there any way to remove or redefine these restrictions? Thanks.

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