91. evaluate the improper integral sin dr (a) 0 (b) 1 (c) 2 (d) does not exist 92. findo- dx (a) 2 (b) 3 (c) 4 (d) none of these 93. the sequence jn}, where j,(

91. Evaluate the improper integral sin dr (A) 0 (B) 1 (C) 2 (D) does not exist 92. Findo- dx (A) 2 (B) 3 (C) 4 (D) None of these 93. The sequence Jn}, where J,(x) =X", 0