正弦函數的衍生物

Question

我正在做一個代碼來確定正弦函數的導數，但我有兩個問題。在閱讀它們之前，請注意，這不是我的全部代碼（這只是一個開始，我不想複製整個代碼，因爲它的長度超過100行），而且它還遠遠沒有完成。

1. 我的代碼無法運行。它總是說語法錯誤，並在'if'語句中突出顯示冒號，這很奇怪，因爲那部分對我來說似乎很好。

2. 當打印解決方案時，我不希望計算的數學值和打印的字符串之間存在空格。我在他們之間添加了逗號，但我不知道如何擺脫去那裏的空間。

print("y=C(sin(Ax))^p") 
C= float(input("What is the coefficient(C; c!=0)? ")) 
A= float(input("What is (A; A!=0)? ")) 
P= float(input("What is the function rasied to the power of (P; P!=0)?") 
if P==1: 
    if A==1: 
     if C==1: 
      print("dy/dx=cos(x)") 
     elif C>0: 
      print("dy/dx=",C,"cos(x)") 
    elif A>1: 
     if C==1: 
      print("dy/dx=",A,"cos(",A,"x)") 
     elif C>1: 
      print("dy/dx=",A*C,"cos(",A,"x)") 
     elif C<1: 
      print("dy/dx=",A*C,"cos(",A,"x)") 
    elif A<1: 
     if C==1: 
      print("dy/dx=",A,"cos(",A*-1,"x)") 
     elif C>1: 
      print("dy/dx=",A*C,"cos(",A*-1,"x)") 
     elif C<1: 
      print("dy/dx=",A*C,"cos(",A*-1,"x)") 

Answer 1

你的間距爲關閉。縮進在python中非常重要。只需在python中進行選擇就很容易，所以你不會犯錯誤，比如只敲三次而不是四次。仔細查看下面的代碼，我修正了間距 - 差別很小。

print("y=C(sin(Ax))^p") 
C= float(input("What is the coefficient(C; c!=0)? ")) 
A= float(input("What is (A; A!=0)? ")) 
P= float(input("What is the function rasied to the power of (P; P!=0)?")) 
if (P==1): 
    if A==1: 
     if C==1: 
      print("dy/dx=cos(x)") 
     elif C>0: 
      print("dy/dx=",C,"cos(x)") 
    elif A>1: 
     if C==1: 
      print("dy/dx=",A,"cos(",A,"x)") 
     elif C>1: 
      print("dy/dx=",A*C,"cos(",A,"x)") 
     elif C<1: 
      print("dy/dx=",A*C,"cos(",A,"x)") 
    elif A<1: 
     if C==1: 
      print("dy/dx=",A,"cos(",A*-1,"x)") 
     elif C>1: 
      print("dy/dx=",A*C,"cos(",A*-1,"x)") 
     elif C<1: 
      print("dy/dx=",A*C,"cos(",A*-1,"x)") 

至於沒有間距的打印，只需使用+操作符。例如print("some" + "thing")會輸出字符串"something"