I don't know how to put four plots(y=3^x, y=(1/3)^x, y=(3/2)^x, y=e^x) into a same coordinates. I typed:
我不知道如何将四个图（y = 3 ^ x，y =（1/3）^ x，y =（3/2）^ x，y = e ^ x）放入相同的坐标中。我打字：
a = function(x){y=3^x}
b = function{y=(1/3)^x}
c = function{y=(3/2)^x}
d = function(x){exp(x)}
plot(-4:4, a, b, c, d)
but it did not work. How can I fix this?
但它不起作用。我怎样才能解决这个问题？
1 个解决方案
#1
1
Use the add=TRUE option, Also you have your second and third functions written wrong (they take no parameters). So you have:
使用add = TRUE选项，你的第二个和第三个函数写错了（它们没有参数）。所以你有了：
a = function(x){y=3^x}
b = function(x){y=(1/3)^x}
c = function(x){y=(3/2)^x}
d = function(x){exp(x)}
and you plot using:
你使用以下绘图：
plot(a , -4 , 4)
plot(b , -4 , 4, add=TRUE)
plot(c , -4 , 4, add=TRUE)
plot(d , -4 , 4, add=TRUE)
#1
1
Use the add=TRUE option, Also you have your second and third functions written wrong (they take no parameters). So you have:
使用add = TRUE选项，你的第二个和第三个函数写错了（它们没有参数）。所以你有了：
a = function(x){y=3^x}
b = function(x){y=(1/3)^x}
c = function(x){y=(3/2)^x}
d = function(x){exp(x)}
and you plot using:
你使用以下绘图：
plot(a , -4 , 4)
plot(b , -4 , 4, add=TRUE)
plot(c , -4 , 4, add=TRUE)
plot(d , -4 , 4, add=TRUE)