I am a beginner trying to enter a function prototype into C++. This is what I have entered....where am I going wrong?(adsbygoogle = window.adsbygoogle || []).push({});

double f(double x)

{

return 5*pow(x,3)-3*pow(x,2)+2*x+1;

}

I would like to be able to enter something like f(2.4) later in the code, and have it calculate the value using this function. How would I do this?

f(x)=5x^{3}-3x^{2}+2x+1

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# Function prototype

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