Question: (a) Prove that the plus-part function satisfies: [x]+ - [-x] = x for any number X. (b) Apply the identity in part (a) to

(a) Prove that the plus-part function satisfies: [x]+ - [-x] = x

(a) Prove that the plus-part function satisfies: [x]+ - [-x] = x for any number X. (b) Apply the identity in part (a) to the payoff values of European-style Call and Put options for S at strike price K and expiry T to show: C(T) - P(T) = S(T) - K

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