If 2i +pj and 4i -2j are perpendicular, find the value of p.

Similar Questions

Find, in surd form, the value of $\cos 165$....

Express (14N, 240°) as a column vector. ...

In computing the mean of 8 numbers, a boy mistakenly used 17 instead of 25 as one of the numbers and...

Find the area between line y = x + 1 and the x-axis from x = -2 to x = 0.  ...

The initial velocity of an object is $u = \begin{pmatrix} -5 \\ 3 \end{pmatrix} ms^{-1}$. If the a...

If $f(x) = \frac{1}{2 - x}, x \neq 2$, find $f^{-1}(-\frac{1}{2})$....

Given n = 3, evaluate $\frac{1}{(n-1)!} - \frac{1}{(n+1)!}$...

Given that $\log_{2} y^{\frac{1}{2}} = \log_{5} 125$, find the value of y...

Find an expression for y given that $\frac{\mathrm d y}{\mathrm d x} = x^{2}\sqrt{x}$...

Simplify: $^{n}C_{r} ÷ ^{n}C_{r-1}$...