Solving an equation with one variable

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Venkatesh Tanikonda
Venkatesh Tanikonda 2019-10-23
回答： Star Strider 2019-10-23
How can I solve :
(q*a^4/(E*t^4)) = k1*y/t + k2*(y/t)^3;
q,a,t,E,k1,k2 are constants; where as y is the variable.
How to write matlab code to solve this in terms of y.

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采纳的回答

Star Strider
Star Strider 2019-10-23
One approach:
Out = fzero(@(y) (q*a^4/(E*t^4)) - k1*y/t + k2*(y/t)^3, 2)
That assumes that all ‘constants’ are scalars. Choose the initial estimate (here 2) that best approximates the value for ‘y’ that you want to find.

更多回答（1 个）

Andrei Bobrov
Andrei Bobrov 2019-10-23
syms q a t E k1 k2 y
eq = (q*a^4/(E*t^4)) == k1*y/t + k2*(y/t)^3;
sol = solve(eq,y,'MaxDegree', 3);

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