Question

find mode and mean of the following data​

Answer 1

Let a=3xa=3x and b=5x,b=5x, Then expression convert into f(a,b)=a+b−a2+ab−b2f(a,b)=a+b−a2+ab−b2

So

f(a,b)=−12[2a2+2b2−2ab−2a−2b]f(a,b)=−12[2a2+2b2−2ab−2a−2b]

So

f(a,b)=−12[(a2−2a+1)+(b2−2b+1)+(a2+b2−2ab)−2]f(a,b)=−12[(a2−2a+1)+(b2−2b+1)+(a2+b2−2ab)−2]

So

f(a,b)=−12[(a−1)2+(b−1

Answer 2

Answer:

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