7. Let F: M N be a mapping. Prove: (a) If a is a curve segment in M, and is a 1-form on N, then | F Silao. (b) If x is 2-segment in M, and n is a 2-form on N, then SS. F*7 = S Seran. 7. Let F: M N be a mapping. Prove: (a) If a is a curve segment in M, and is a 1-form on N, then | F Silao. (b) If x is 2-segment in M, and n is a 2-form on N, then SS. F*7 = S Seran