Dwyane Wade

Active since 2011

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getting the "n" in quadratic regression
How do you get the *n* manually from the quadratic regression formula: y=ax^2+b+c (Σx^2)a + (Σx)b + *n* c = Σy (Σx^3)a + (Σx...

meer dan 13 jaar ago | 0 answers | 0

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Question

Parabolic regression problem
how do you find a b and c in parabolic regression? like in this expression: y= -0.20x^2 + 1.94x + 2.78, how do you get 0.20 1.94...

meer dan 13 jaar ago | 1 answer | 0

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answer

Question

matrix question
Q = 10 20 30 40 50 60 70 8 9 10 11 12 13 14 33 30 27 24 21 ...

meer dan 13 jaar ago | 1 answer | 0

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Question

function of roots
I have another problem it says: give the function whose roots are 4, -3, -2, 1/5 and 0. should I use poly(x) or roots(x)? ...

meer dan 13 jaar ago | 1 answer | 0

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answer

Question

getting a matrix out of a matrix
Hi there guys I have a question. How do you get an output out of a matrix? for example here is the matrix: Q = 10 20 ...

meer dan 13 jaar ago | 1 answer | 0

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answer

Question

solutions of equations
how do I find solution for the following problems? (this topic is under solutions of equations.) 1. e^4x-3e^2x=-2 2. tan^-...

meer dan 13 jaar ago | 1 answer | 0

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Question

symbolic processing
Hi there I have a problem and it is under Symbolic Processing topic. How do I evaluate these expressions in terms of x? 1....

meer dan 13 jaar ago | 1 answer | 0

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Question

using polyval(a,x)
Hi guys please help me I cant seem to figure out how to use polyval(a,x), I need to use it to solve the following problem: 1....

meer dan 13 jaar ago | 2 answers | 0

2

answers

Question

Evaluating an expression in terms of x:
How do I evaluate these expressions in terms of x? 1.) tan(2x-45degrees) 2.) sin(30degrees-3x) also, how do I put the s...

meer dan 13 jaar ago | 2 answers | 0

2

answers

Question

how do you use sin in matlab?
like for example I will input sin 30 when I do this I get an error: ??? Undefined function or variable 'sin30'. sin is a ...

meer dan 13 jaar ago | 2 answers | 1

2

answers

Question

sym and syms
what is the use of sym and syms and what are their differences?

meer dan 13 jaar ago | 2 answers | 0

2

answers

Answered
finding an output from a matrix using a single syntax
Im not sure what the logic is, all I know is that we are required to find R = [33 9 30 74 -4 72 63 15] using a single syntax lik...

meer dan 13 jaar ago | 0

Question

finding an output from a matrix using a single syntax
Hi there guys I have a question. How do you get a single line output out of a matrix? for example here is the matrix: Q = ...

meer dan 13 jaar ago | 4 answers | 0

4

answers