6.3.2a Melakar Graf Fungsi Trigonometri (Bahagian 1)
Contoh:
Lakarkan graf bagi setiap fungsi trigonometri yang berikut untuk 0 ≤ x ≤ 2π.
(a) y = 3 sin x
(b) y = 2 kos x
(b) y = 2 kos x
(c) y = sin x + 1
(d) y = kos x –1
(d) y = kos x –1
(e) y = sin 2x
(f) y = kos 2x
(f) y = kos 2x
(g) y = –sin x
(h) y = –kos x
(h) y = –kos x
(i) y = | sin x |
(j) y = | kos x |
(j) y = | kos x |
(k) y = tan 2x
Penyelesaian:
(a) y = 3 sin x
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture21.png)
(b) y = 2 kos x
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture22.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture22.png)
(c) y = sin x + 1
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture25.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture25.png)
(d) y = kos x –1
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture26.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture26.png)
(e) y = sin 2x
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture23-1.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture23-1.png)
(f) y = kos 2x
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture24.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture24.png)
(g) y = –sin x
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture27.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture27.png)
(h) y = –kos x
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture28.png)
(i) y = | sin x |
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture29-1.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture29-1.png)
(j) y = | kos x |
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture32-1.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture32-1.png)
(k) y = tan 2x
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture31.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2015/11/Picture31.png)