5log53=3, so the original formula =- 1.
2. Just the other way around, first fold 180 along the Y axis. , and then move 2 units to the right.
Lg(3-X)
3. The square of both sides is (k2- 1)x2+(4k+2)x+3=0, so (4k+2)2-4*(k2- 1)*3 is greater than 0 and k is not equal to 1 and-/kloc-0.
4. Sn = B2N+A Sn-1= B2N-1+A Sn-Sn-1= CN = B2N-1So, Sn = C1(1-)
I hope it helps you. I haven't forgotten it for a long time It may be wrong. Please forgive me!