Solving a system of equations.
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For
and
where
How do I write a code that will take a given x and y value and output an alpha and delta value?
1 个评论
jgg
2016-1-26
Do you want a numerical solution or a symbolic solution?
回答（1 个）
Vineeth Kartha
2016-2-3
Hi Christopher,
The following lines of code will do the trick:
>> syms alpha delta
>> solver = @(x,y) solve(x ==alpha / delta^2 , y ==(( (3*alpha*(1+delta)^2) + ( (1+alpha)*(1+alpha*delta^2)))^(0.5))/((1+alpha)^2), alpha, delta,'IgnoreProperties', true);
>> sol = solver(x,y);
Pass the desired values of x and y to the function named "solver". This will return a structure that contains the values of "alpha" and "delta", for the given x and y values.
2 个评论
Christopher Marlar
2016-2-3
Walter Roberson
2016-2-3
Your delta is always squared so algebraically both negative and positive values are valid. The message is warning you that multiple solutions have been returned but that they might not all make sense in the overall context.
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2016-1-26
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