How do I find the minimum value which satisfies the two equation below by using Mathematica? d and w in these equations are constant. The only variable is a.

y=-5 a^3 
y=-a ((5 w d^2)/4 + 5 w d) + (5 w d^2)/2

I typed this into Mathematica but it is not working

MinValue[{-5 a w^2, (5 w d^2)/2 - a (5 w d + (5 w d^2)/4)}, {a}]

1 Answer 1


If I understand your question, what you want to minimize is the value of a subject to the constraint of the equations. If so, the correct syntax is

MinValue[{a, -5 a w^2 == (5 w d^2)/2 - 
     a (5 w d + (5 w d^2)/4)}, {a}] // Simplify

enter image description here


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.