Fill in the blanks: 1, a * x A- 1 2, 1 3, the left and right limits exist and are equal to 4, and the maximum value is 5, -(CSC X) 26,1(1-x 2) 653. 28,0.5x-0.25sin (2x) 9,1e10, f (x) is defined in X0, the left limit is not equal to the limit, and the limit value is equal to but not equal to the defined value1,01. 1/3(sinx)^3- 1/5(sinx)^5 13， 1/3

Multiple choice questions: 6, B 7, D 8, c,

Solution: (Not easy to edit. I'll write it down for you when you are free. . . )