Calculus › Extrema and curve sketching › Bounds from derivatives

Most economical car speed

High school · ●○○○○ 10 pts

A car's fuel use is given by f(v)=380v2−6v+245f(v)=\frac{3}{80}v^{2}-6v+245, where vv is the travelling speed. Find the speed vv that minimises the fuel use.

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optimizationderivativesstationary points