## How I can find all Maxima and Minima from graph of...

Dear All

I have a trignometric function and I plotted it in 2D. It is visible from the graph that the function has Maxima and Minima. My question is, can I located all values

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of "x" corresponding to these Max. and Min. ?

## Finding the root corresponding to maximum absolute...

Hi,

I have to find the root of an equation corresponding to the maximum absolute value. I am using root finding package to get all the roots. But after getting all the roots i am not able to apply abs function. Maple sheet is attached.

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I will be really thankful for the help.

Regards

Sunit

## Differentiate a function...

Hello :-),

How can I differentiate the follwing function:

Cq = Cao*k1*t / [(1+k1*t)*(1+k2*t)]

If want to find the maximum:

dCq/dt = 0

I can solve if of course by hand. The solution is t=1/sqrt(k1*k2)

I tried it with maple, but I got a strange result (see picture). How can I use maple to get the right result?

Thank you very much!

## Finding local minima and maxima of a function of t...

I need to find the local maxima and minima of f(x,y)=x(x+y)*e^(y-x). I have tried to look for an appropriate method that I could use to achieve this, but got stuck. I also don't quite understand the math behind tying to obtain the local maxima and  minima for a function of this type.

## How to find the critical points and local maxima a...

Find the derivative of f(x)=|(x^3)-8*(x^2)+5*x+4|-0.5*x;x in [-1,7]

Find critical points of f(x) and dertimine the local maxima and local minima.

Output: Two lists of points (x,y), a list of local minima and a list of local maxima.

Hint: you may use Maple package Student[Calculus1]]

use first derivative test to avoid 'kink' point i.e. undifferentiable point

set delta=0.0001, test derivative around critical point x+delta and x-delta...

## Assigning weights to variables...

Hello,

The Maxima package has a function RATWEIGHT that can be used to assign weights to variables:

Function: RATWEIGHT (v1, w1, ..., vn, wn)assigns a weight of wi to the variable vi. This causes a term to be replaced by 0 if its weight exceeds the value of the variable RATWTLVL [default is FALSE which means no truncation]. The weight of a term...