作业帮又一道急需解决的SAT2 Math If f(x)=X^2-3x+4,which of the following is an approximation of f(f(f(3+7/8)))?正答：1223.21
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又一道急需解决的SAT2 Math If f(x)=X^2-3x+4,which of the following is an approximation of f(f(f(3+7/8)))?正答：1223.21
又一道急需解决的SAT2 Math
If f(x)=X^2-3x+4,which of the following is an approximation of f(f(f(3+7/8)))?
正答：1223.21
又一道急需解决的SAT2 Math If f(x)=X^2-3x+4,which of the following is an approximation of f(f(f(3+7/8)))?正答：1223.21
= =这不是很简单么
f(f(f(3.875))) = f{ f[ f(x) ] }
solve:
f(x)=x^2-3x+4,
1# f(3.875)=7.390625
2# f(7.390625)=36.449462891
3# f(36.449462891)=1223.214956342
so 1223.214956342 ≈ 1223.21
又一道急需解决的SAT2 Math If f(x)=X^2-3x+4,which of the following is an approximation of f(f(f(3+7/8)))?正答：1223.21
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