1. Given the function f(x)=84x-5Ax-20 Ax + B, find all 1st and 2nd order critical values,...

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1. Given the function f(x)=84x-5Ax-20 Ax + B, find all 1st and 2nd order critical values, build sign charts for both the 1st and 2nd derivative, determine the intervals where the function is increasing, decreasing, concave up or concave down, find all local minimum and maximum points and all inflection points and use this information to obtain an accurate graph. Any numerical value that is nit exact may be rounded to the nearest 0.1. 1. Given the function f(x)=84x-5Ax-20 Ax + B, find all 1st and 2nd order critical values, build sign charts for both the 1st and 2nd derivative, determine the intervals where the function is increasing, decreasing, concave up or concave down, find all local minimum and maximum points and all inflection points and use this information to obtain an accurate graph. Any numerical value that is nit exact may be rounded to the nearest 0.1.