1.

Find the maximum or minimum values of the following expressions i) 2x -7 – 5x^(2) ii) 3x^(2)+2x+11 iii) ax^(2)+bx+a, a,b in R, a != 0 iv) x^(2)-x+7

Answer»


Answer :i) maximum value = `-(34)/(5)` ii) minimum value = `(32)/(3)` III) If `a gt 0`, minimum value = `(4a^(2)-b^(2))/(4a)` If `a lt 0`, maximum value = `(4a^(2)-b^(2))/(4a)` IV) `a=1 gt 0`, minimum value = `(27)/(4)`


Discussion

No Comment Found

Related InterviewSolutions