In `nl^(x)` method , what is x ?

What is n l^(x) method ? How is it useful ?

Check the validity of the following compound statement using (i) direct method contrapositive method and (iii) contradiction method If x is a real number such that 4x^(3)+3x=0, " then" x=0

Show that the statement p: "If x is a real number such that x^3+4x=0 . then x is 0" is true by (i) direct method, (ii) method of contradiction, (iii) method of contrapositive.

Show that the statement p: ''If x is a real number such that x^(3) + 4x = 0 , then x is 0'' is true by (i) direct method, (ii) method of contradiction, (iii) method of contrapositive

Show that the statement p: ''If x is a real number such that x^(3) + 4x = 0 , then x is 0'' is true by (i) direct method, (ii) method of contradiction, (iii) method of contrapositive

Consider the statement : p : If x a real number such that x^3 +4x =0 then x=0 prove that p is a true statement using : (i) direct method d (ii) method of contradiction (iii) method of contrapositive

If x/(lm - n^(2)) = y/(mn - l^(2)) = z/(nl - m^(2)) , then show that lx + my + nz = 0 .

If x/(lm - n^(2)) = y/(mn - l^(2)) = z/(nl-m^(2)) , then prove that lx + my + nz = 0 .

In set builder method the null set is represented by {} b.varphi c.{x:x!=x} d.{x:x=x}