2016 (3) ET, 1350 (2-1) (1) 2x+Y=2 —+— x, (2) X+y f(x ...

1 + tan20 O (¥0) k, tan O 3cos20 —3tanÐ — 18 tan O (i) (ii) 1 100 A Zit, â400 A (2) [0, xo=o, XI=L, xn=l y=x2 11+1 (2-1) (2—2) lims„ a 1 ................
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