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    				| 1. | यदि ` f(x) = {{:( -2 sin x ",",, x ge -pi//2), ( a sin x + b",",, - pi//2 lt x lt pi//2),( cos x",",, x ge pi//2):}`, एक सतत फलन हो तो -A. ` a = 1, b = 1 `B. ` a = - 1, b = 1 `C. ` a = 1, b = - 1 `D. ` a =b = - 1 ` | 
| Answer» Correct Answer - B | |