Question

pls help me with this question!!!
spammers pls stay away!!​

Answer 1

I'm not sure about this one .

But a should be +ve and b should be -ve

Edit :- There's on error in diagram, the direction of EF near b is towards left.

At B EF is -ve cuz acc/to the given diagram in the ques, the curve doesn't passes the point b.

So, the nearest point available is towards left of point "b".

and this makes the EF negative.

that means ... you can even guess the answer by just looking at graph (☞ﾟ∀ﾟ)☞