LOGARITHM:
LOGARITHM:
>> X = 25
X =
25
>> Y = log(X)
Y =
3.2189
Exponential
>> x = 25
x =
25
>> y = log(x)
y =
3.2189
>> y = exp(x)
y =
7.2005e+010
Trignometric functions:
>> x = 35
x =
35
>> y = sin(x)
y =
-0.4282
Convolution:
m = 10
m =
10
>> n = 20
n =
20
>> s = conv(m,n)
s =
200
Deconvolution:
>> s = [7 8 9] ; t = [4 5 6];
>> c = conv(s,t)
c =
28 67 118 93 54
>> deconv(c,s)
ans =
4.0000 5.0000 6.0000
>> deconv(c,t)
ans =
7 8 9
Squareroot :
>> x = 64
x =
64
>> y = sqrt(x)
y =
8
Matrix:
a = [ 1 2 3; 4 5 6; 6 7 9]
a =
1 2 3
4 5 6
6 7 9
>> b = [ 9 8 7; 6 5 4; 3 2 5]
b =
9 8 7
6 5 4
3 2 5
sum =(a+b)
sum =
10 10 10
10 10 10
9 9 14
prod = (a*b)
prod =
30 24 30
84 69 78
123 101 115
Median:
>> a = [1 2 3 ; 1 2 3; 3 2 1; 3 2 1]
a =
1 2 3
1 2 3
3 2 1
3 2 1
>> median(a)
ans =
2 2 2
Skewness:
>> X = randn([8 6])
X =
-0.4326 0.3273 1.0668 -0.6918 0.8156 -1.6041
-1.6656 0.1746 0.0593 0.8580 0.7119 0.2573
0.1253 -0.1867 -0.0956 1.2540 1.2902 -1.0565
0.2877 0.7258 -0.8323 -1.5937 0.6686 1.4151
-1.1465 -0.5883 0.2944 -1.4410 1.1908 -0.8051
1.1909 2.1832 -1.3362 0.5711 -1.2025 0.5287
1.1892 -0.1364 0.7143 -0.3999 -0.0198 0.2193
-0.0376 0.1139 1.6236 0.6900 -0.1567 -0.9219
>> y = skewness(X)
y =
-0.2197 1.3827 -0.1373 -0.2329 -0.8618 0.2622
Plot :
x = 25
x =
25
>> y = cos(x)
y =
0.9912
plot(x,cos(x))
>> x = -pi:0.01:pi;
>> plot(x,cos(x))
>>
x= 5
x =
5
>> y = tan(x)
y =
-3.3805
>> x = -pi:0.1:pi;
>> plot(x,tan(x))
[pic]
Plot of cos function
[pic]
Plot of tan function
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