Grade 12Differential Calculus

help soon........please question attached......................................................................................................................

milind

10 Years agoGrade 12

1 Answer

Sri Harsha Kavalipati

Approved Tutor Answer10 Years ago

I think it is option D (does not exist)

Because for the function to be differentiable at a point, the curve should be continuous and smooth...

which means that slopes of both graphs should be equal at that point and even the value of f(x) should be the same...

Case 1:

Slopes are equal...

Take the derivate of both graphs and equate...

2mx=2 (at x=1)

Which implies m=1

Case 2:

Curve is continuous

f(x) values should be same

mx2 = 2x

For x=1

m=2

Both the m values are different

So curve is not differentiable at that point

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help soon........please question attached......................................................................................................................

milind

1 Answer

Sri Harsha Kavalipati

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