How to plot the surface $z=\sum_{n=0}^100 x^{2-n}y^{n/2}$ for $0<x,y<10$ in MATLAB ?

How to plot the surface $z= f(x,y)=\sum_{n=0}^100 x^{2-n}y^{n/2}$ for $0

05 June 2018 242 7 View

As we know that the double sequence $x_{mn}$ represents an infinite matrix, in the similar way how we represent a triple sequence $x_{lmn} $ ?

How we represent a triple sequence?

08 September 2017 9,115 2 View

How could we represent a four dimensional identity matrix ?

06 July 2015 6,638 10 View

Is there any name of a matrix with all elements above super diagonal position at zero?

31 December 2014 5,368 6 View

What is the limiting value of (sin x)^x as x tends to 0 ?

What is the limiting value of (sin x)^x as x tends to 0 ?

11 December 2014 1,174 0 View

Is there any formula to find the nth root of a Matrix ?

We know square root of a matrix, but in general what is the fractional and non-integral power of a non zero matrix ?

08 September 2014 4,318 1 View

What is the use of Kernel in integral transform ?

07 August 2014 1,476 1 View

What is the time complexity for the inversion and determinant of a triangular matrix of order n?

By backward and forward substitutions we calculate the inverse of a triangle. How far is it better than the determinant method concerning the running time?

03 April 2014 5,441 5 View

Is there any geometrical relation between fractional calculus and fractal ?

Of course there are some concepts of fractional calculus that are co-related to fractal. But how are they geometrically related ?

02 March 2014 2,374 3 View

Does Laplace transform of e^{t^2} exist ?

Although, the function e^{t^2} is not exponentially bounded and due to linearity of Laplace transform we may write L {(e^{t^2}}=L{1+t^2+(t^4)/2!+(t^6)/3!+....}...

01 February 2014 3,439 4 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View