又一道急需解决的SAT2 Math
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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
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](/uploads/image/z/19708653-21-3.jpg?t=%E5%8F%88%E4%B8%80%E9%81%93%E6%80%A5%E9%9C%80%E8%A7%A3%E5%86%B3%E7%9A%84SAT2+Math)
= =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
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