How to determine unknown value from an equation

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Vinay Srinivasan
Vinay Srinivasan le 4 Oct 2019
Commenté : Vinay Srinivasan le 4 Oct 2019
Power_roadatmaxspeed=((2.73*C_r*m)+(0.0126*C_d*a*S^2))*S
The above written is my equation. I have given values for C_r, m ,C_d , a initially as they are given data of a vehicle .I found the Power_roadatmaxspeed now. So I want to find S. How to determine through matlab ?

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Matt J
Matt J le 4 Oct 2019
Modifié(e) : Matt J le 4 Oct 2019
It's a cubic polynomial, so you can use roots().
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Walter Roberson
Walter Roberson le 4 Oct 2019
roots([0.0126*C_d*a, 0, 2.73*C_r*m, -Power_roadatmaxspeed ])
Vinay Srinivasan
Vinay Srinivasan le 4 Oct 2019
Thank you so much

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