21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.37.38.39.的英文单词是?
题目
21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.37.38.39.的英文单词是?
答案
twenty-one21 twenty-two22 twenty-three 23 twenty-four24 twenty-five25 twenty-six 26 twenty-seven 27twenty-eight28 twenty-nine 29 thirty30 thirty-one31 thirty- two 32 thirty- three 33 thirty- four 34 t...
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已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
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