Q78·Section II (Mathematics)·78 of 180The first divided difference of 1/x21/x^21/x2If f(x)=1x2f(x)=\dfrac1{x^2}f(x)=x21, then the first divided difference [a,b][a,b][a,b] is: OptionsA−(a+b)a2b2\dfrac{-(a+b)}{a^2b^2}a2b2−(a+b)B+(a+b)a2b2\dfrac{+(a+b)}{a^2b^2}a2b2+(a+b)Ca+bab\dfrac{a+b}{ab}aba+bDa−bab\dfrac{a-b}{ab}aba−bPick an option to check your answer.Show answerShow solution Report a problem with this question← Q77All questionsQ79 →Keyboard: A–D answer · S solution · ←/→ previous/next