Recent content by salistoun

Hi all, How do you go about solving this question as it says: Show that the matrix: | costheta sintheta 0 | B= | -sintheta costheta 0 | | 0 0 1 | is invertible for all values of theta [Hint. Show that det(B) is not...

thx Muprid

Thanks Don i do get what u saying

Hi Don, If I'm correct, the parametric equation for the following points is: x = -2t + 5, y = -9t - 6 and z = -2t + 10 So no values are matching this parametric x = 2 + t; y = 3 - 3t, z = 4 + 2t. So therefore it does not lie on the line right?

Hi all, How do I go about solving the following question? Determine whether the points (5 , -6 , 10) and (3, 3 , 8) are on the line x = 2 + t; y = 3 - 3t, z = 4 + 2t Stephen

Hi all, There is a question that asks? Determine the cube roots of 1 in polar form? Does that mean I can use De Moirve Formula? Stephen

Thanks Don it makes sense. Stephen

Hi all, How do you go about solving the following Question? Find an equation of the plane containing the point (1 , 1 , -1) and perpendicular to the line through the points (2 , 0 , 1) and (1 , -1 , 0). Stephen

Hi all, How do u go about doing this question? x - 2y +z =4 y- z =3 (a^2 - a - 2)z = a+1 Determine values of a for which the system has no solution, one solution and many solutions Stephen

Hi all, How do you find out if this Parametric equation x = -2t + 3 ; y = -t - 1 ; z = -3t + 2 Is perpendicular to this parametric equation x = -2 + 6t ; y = 3 - 6t ; z = -3 - 2t Thanks Stephen

Hi all, What is the formula of an equation of a plane that is parallel to the plane. For example the plane is x - 3y -2z -4 = 0 going through a point(1 , 1, 1). Thanks, Stephen

thanks Andrien

Hi all, I got this question from a past exam paper does the point (8 , 4 , -5) lie on the plane 7x - 3y + 4z = 8? Do you work it out as follows because can't find this example in my Linear Algeria book? 7(8) - 3(4) + 4(-5) = 8 56 - 12 - 20 = 8 24 is not equal to 8 Therefore the...