Question

訪客

第三題a b要怎麼證明?

(b) (10 pts) Prove thatlimza,j+ 0 =  2          ! 請

3. (20 pts) Prove that                                    X?》

(a) 了() 一|2x避品 not continuous at X 三 0.
(b) 了(福) 三 |2x和過誠 not differentiable at 文三 0.

4. (10 pts)
The statement: “If xX > 0 andy > 說 歸 0thenx+于2 0.

和 光i生人 誤于