## 187 Reputation

4 years, 144 days
I have retired as Professor-Mechanical in Sri Venkateswara College of Engineering and Technology under Anna University affiliated colleges in TamilNadu, India. I have 19 years of Industrial and 20 years of teaching experience. I am learning Maple for the past three and half years hoping to make atleast one appreciable maple presentation.

## How to remove equation labels? in Maple...

Maple

Pl. help me remove the equation labels or hide the equation labels in my doc enclosed. What should i do to prevent equation labels from forming in my document. Please refer last two rows in the table below from the document.

Thanks for helping.Ramakrishnan V

Conversion from ppm to % vol is 1ppm = 0.0001 %

Conversion from % vol to ppm is

Avagadro's law between mass and volume is

where T is abs temperature and M is molecular weight;

M/(0.08205T)]*ppm*((A/F)*EA+1) /ρex; Emission is mg/kg fuel

If SFC is x g/kWhr; then Mass flow of exhaust is  (x/1000)*[M/(0.08205T)]*ppm*((A/F)*EA+1) /ρex; Emission is mg/kWhr

If the distance covered per liter is DCL km/liter, then (SFC/1000)*(DCL)/  is distance covered in km/kWhr

1 g/cc = 1 kg/lit; 1kg/m3 = 1 g/lit; Fuel density  is 0.77 kg/lit

Emission in mg/km = 0.77*Emission is mg/kg fuel/(km/liter fuel)

SFC is in g/kWhr

Measured emission is  E in ppm

Excess Air percentage is EA in per unit point

Molecular Weight of pollutant is M g/mol

Molecular weight of air =  =  g/mol

SFC

g/kWh

 (1)

kg/liter

DCL

km/liter fuel

A/F

EA

 (2)

K

 (3)

kg/m3

=

CO

CO2

HC

NO2

O2

N2

Air

M [g/mol]

Emission [% ] or[ppm]

%

%

ppm

ppm

%

%

%

Emission [mg/Nm3]

 (4)

 (5)

 (6)

 (7)

 (8)

 (9)

 (10)

Emission

mg/kWh

=

=

=

=

=

=

=

Emission

mg/kg fuel

=

=

=

 (11)

=

 (12)

=

 (13)

=  =

=

Emission

[mg/km]

Why in the above row, col2 and col3 have no equn nos?

What should i do to remove the equn numbers 11, 12 and 13?

Temperature of exhaust is in T K

Density of exhaust is say  kg/m3

DCL is distance covered per kWh

 (14)

Emission in g/kWhr is

Emission g/g of fuel = Emission in g/kWhr/SFC in g/kWhrper

Emission in mg/km = 0.77*Emission is mg/kg fuel*(km/liter fuel)

Maple

I have spent much of my time earlier to make curve fitting possible. Somehow, because of my mistakes, the format for curve fitting changed. Can any one help me with getting my answer for curve fitting in the doc and from the excel data enclosed. Data imported, but donot know how to order the way it wants. I know the way,but do not iknow how to get it now.

Thanks

 (1)

 (2)

 (3)

 (4)

 (5)

 (6)

 (7)

 (8)

 (9)

## Doubt in List - Answers unable to explai...

Maple

Dear colleagues, Can anyone explain what (a::list,b::list) will be understood by the programme?

I thought the programme is made for only adding the numbers in the list. But it seems there is something more than that, i could not get.

Equn label (6) onwards, I donot understand, how the answer was obtained.

Thanks for explaining.

Ramakrishnan V

 (1)

 (2)

 (3)

=

 (4)

 (5)

 (6)

 (7)

 (8)

 (9)

 (10)

## Given x, y and z values for two cases, t...

Maple

Dear friends,

 Effect of A and B on z values A B x values y = 5 y = 5
Table 1: Effect of Modified Parameters on z output

Dear friends.,
I want a suitable plot for the above data. I have given the values as [ x  y  z] for z values to be plotted for the two cases, A and B in the same graph to compare and get the best option x ,    y and A or B .

Mathematically an x vs y vs z plot. Any bar or similar plot is what seems suitable to me.

I could not locate any help for plotting 3D data values in help page.

Thanks.

Ramakrishnan V

## complex and imaginary or real and imagin...

Maple 2017

Can any one disprove maple answer in the attached document?
If not, what is the conclusion?

 (1)

 (2)

 (3)

 (4)

 (5)
 (6)

 (7)

My opinion from the above is : When a is real and b is complex, a and b can not be compared.

Like number of goats and number of lions  can not be added to give an answer in number of lions alone or number of goats alone!!
Riemann's function Zeta is a function of Complex number

 (8)

 (9)

 (10)

 (11)

What does the above results convey??

Am I correct if i state that 's' should be a complex number only and not a real number.