If f(x+1)-f(x)=2x+1, find the value of f(3)-f(1)
答案是8, 請求計法。
function 問題, 數學高手請入來
2011-10-15 6:10 pm
回答 (1)
2011-10-15 6:31 pm
✔ 最佳答案
f(x+1) – f(x) = 2x+1代x=1=>f(2) – f(1) = 3…(1)代x=2=>f(3) – f(2) = 5…(2)(1)+(2)=>f(2) – f(1) + f(3) – f(2) = 3+5=>f(3) – f(1) = 8
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