MATLAB: How to integral2

integral

how can i integral a function which was written in matlab but there is wrong , i dont no where it is :

syms tau

syms y

f= @(y,tau)y*exp(-0.5.*y.^2/ tau)

expecty=integral2(f, -2,4,0,Inf,'auto')

Best Answer

integral2 is defined for function handle, therefore you do not need symbolic variables:

 f= @(y,tau)y.*exp(-0.5.*y.^2./ tau)
 expecty=integral2(f, -2,4,0,Inf,'auto')

Related Solutions

MATLAB: How can we solve only for t1 variable in the equation P=R1 which has multiple variables such as t2 t3. Which is possible mathematically.

With respect to

syms t1 t2 t3
R1 = [
    cos(t2)*cos(t3) - sin(t2)*sin(t3),  - cos(t2)*sin(t3) - cos(t3)*sin(t2), 0, 10*cos(t2);
    (7344817515977723*cos(t2)*sin(t3))/9223372036854775808 + (7344817515977723*cos(t3)*sin(t2))/9223372036854775808, (7344817515977723*cos(t2)*cos(t3))/9223372036854775808 - (7344817515977723*sin(t2)*sin(t3))/9223372036854775808, 9007196398844849/9007199254740992, (36724087579888615*sin(t2))/4611686018427387904 + 45035981994224245/4503599627370496;
     - (9007196398844849*cos(t2)*sin(t3))/9007199254740992 - (9007196398844849*cos(t3)*sin(t2))/9007199254740992,       (9007196398844849*sin(t2)*sin(t3))/9007199254740992 - (9007196398844849*cos(t2)*cos(t3))/9007199254740992, 7344817515977723/9223372036854775808, 36724087579888615/4611686018427387904 - (45035981994224245*sin(t2))/4503599627370496;
     0, 0, 0, 1];
P = [
     (433*cos(t1))/500, -cos(t1)/2, sin(t1),  0;
    -(433*sin(t1))/500,  sin(t1)/2, cos(t1), 0;
    -1/2, 433/500, 0, 0;
    0,  0, 0, 1];

there is no possible solution for R1 == P.

Compare R1(3,3) = 7344817515977723/9223372036854775808 to P(3,3) = 0. These are constants but do not equal each other, so it is not possible to find t1, t2, t3 that will make the matrices equal.

MATLAB: Correlation between two row matrices

Like that, each value of "a" is correlated to each value of "b", but applying the formula of the correlation, the correlation of two single numbers is NaN. To compute the correlation correctly, traspose the input vectors

result  = corr(a', b');

Best Answer

Related Solutions

MATLAB: How can we solve only for t1 variable in the equation P=R1 which has multiple variables such as t2 t3. Which is possible mathematically.

MATLAB: Correlation between two row matrices

Related Question