changing my x increment along fplot

2020 9 30
2 个回答
回答已采纳
更新时间：2020 9 30
7 次查看（30 天）

0 个投票

clear; clc; close all
syms x
y1 = 7*x^2 -8*x + 1;
Derivert_y1 = diff(y1);
figure(1)
fplot(x, Derivert_y1)
legend('y1 derivert')
xlabel('X-Verdier')
ylabel('Y-Verdier')
i want to change the increment from -5:1:5 to 0:0.002:2

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 采纳的回答

KSSV
KSSV 2020-9-30

1 个投票

Why syms for this?
x = 0:0.002:2 ;
y1 = 7*x.^2 -8*x + 1;
dy1 = 14*x-8 ;
plot(x,dy1)

更多回答（1 个）

Ameer Hamza
Ameer Hamza 2020-9-30

0 个投票

Pass interval as 3rd argument of fplot():
fplot(x, Derivert_y1, [0 2])

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