Swaroop Garg

CAT Preparation Community 10y ago

I have earlier asked about how to find the minimum value of a equation ,suppose we have an example like this, If y is a real number, what is the difference in the maximum and minimum values obtained by ? y+5 / y2+5y+25 , one more is there any hard and fast rule i.e formulaes to find minimum value??

2

Manu Jindal 10y ago

Hi Swaroop,
In order to solve these type of questions suppose the value of (y+5)/(y^2+5y_25) = k
ky^2+(5-k)y+(25k-5) = 0
Discriminant>=0
Hence you will get the 2 values one minimum and another maximum

Swaroop Garg 10y ago

i am facing with minimum values or maximum values question how to tackle these?? any videos on cracku??

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