[問題] e^x相關題目

看板Programming作者peggypiano (大N)時間12年前 (2013/07/17 12:26)推噓0(0推 0噓 4→)

留言4則, 3人參與討論串1/2 (看更多)

這一題的題目我看不太懂QQ 有人能幫忙解釋一下嗎？我就我所理解的先打出來，麻煩幫忙指正了謝謝＞＜ ------ The value e^x can be approximated by the sum 1 + x^1/1! + x^2/2! + x^3/3! +.........+ x^n/n! 　　Write a program that takes a value x as input and outputs this sum for n taken to be each of the values 1 to 100. //Q1:讓使用者可以輸入x，並分別輸出n=1(即1+x^1/1!),..,n=100(即1+...+x^100/100!) 還是輸出n=1(即x^1/1!), n=2(即x^2/2!),...,n=100(即x^100/100!)呢? The program should also output e^x calculated using the predefined function exp. The function exp is a predefined function such that exp(x) returns an approximation to the value e^x. //還要輸出e^x的值(使用者輸入之x, n為無限大)(收斂值?) //Q2: predefined function exp，是指要我先寫一個exp()出來嗎? The function exp is in the library with the header file cmath. Your program should repeat the calculation for new values of x until the user says she or he is through. //Q3:這句我超不懂QQ 是跟我說在<cmath>裡有exp可以參考的意思嗎囧第2句我不懂他的意思，不是已經讓user輸入過x了嗎@_@ repeat the calculation 是? new value of x是? 直到user怎樣呢QQ? Use variables of type double to store the factorials or you are likely to produce integer overflow (or arrange your calculation to avoid any direct calculation of factorials). //Q4: 用double變數去儲存factorials(n!的值嗎?)，不然可能會有整數變數漏掉浮點數、無法進行有浮點數的除法計算的問題? 或是避免計算中直接去計算factorials??這是什麼意思呢QQ 100 lines of output might not fit comfortably on your screen. Output the 100 output values in a format that will fit all 100 values on the screen. For example, you might output 10 lines with 10 values on each line. 請我每10行輸出10個值? 麻煩大家幫忙看看了謝謝QQ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 1.175.137.110 ※ 編輯: peggypiano 來自: 1.175.137.110 (07/17 12:27)