Re: [討論] 如何畫f(x)?
※ 引述《hank254159 (~顓~)》之銘言：
: 請問各位大大:
: 如f(x)=((x^2+1)/(x^2-1))+((x^2+1)/(|x|))
: 如何畫出x與f(x)的圖。
: plot指令好像畫不出耶，還是有其他方式呢?
: 麻煩各位指點!!!!
速解
>>ezplot('((x^2+1)/(x^2-1))+((x^2+1)/(abs(x)))')
一般解
-----------------------------------------------------
function pttex142
x = -7:0.01:7;
f1 = ((x.^2+1)/(x.^2-1))+(x.^2+1)./abs(x);
figure(1)
plot(x,f1)
axis([-7 7 0 11])
title/('一般解')
figure(2)
ezplot('((x.^2+1)/(x.^2-1))+(x.^2+1)./abs(x)')
title/('內建函數')
----------------------------------------------------
但是兩種解出來圖形不大一樣
這有勞數學強的板友幫忙解釋了
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