Ace Test Series 2018: Theory Of Computation - Regular Expressions

Question

Consider a language L1 and L2

L1 = 1* 0 1* 0

L2 = 0* 1 0* 1

Then the quotient of L1 and L2 is 

1. ε
2. Φ
3. 0*
4. 1*

Comments

@hacker16,

if it is left quotient, then  $\frac{L1}{L2}=1^{*}01^{*}0+1^{*}0$

if it is right quotient, then $\frac{L1}{L2}=\phi$

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 joshi_nitish, can you please explain it, little bit more about left quotient that you have generating. i think it should be null.

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How to find quotient?