Question

If f(x)=2x-7/9 find f^-1(x)

Answer 1

Answer:

E = kqx/(r² + x²)^3/2

here x is the distance

 between centre of ring 

to observation point on the axis of ring,

r is the radius of ring and q 

is the charged particle.

Hence, at x = r/√2 ,

E will be maximum .

Step-by-step explanation:

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