3. ry = bi, from x = a to x = b.

Eliminate 'a' and 'b' from : y= a cos x + b sin x .

Eliminate 'a' and 'b' from : y=a cos x+b sin x

If the differential equation formed by eliminating a,b,c from the equaiton y = a e^(x) + b e^(2x) + c e^(3x) is Py_(3) + Qy_(2) + Ry_(1)+Sy = 0 then

Prove that the lines x = py + q, z = ry + s and x = p'y + q', z = r'y + s' are perpendicular if pp' + rr' + 1 = 0.

Subtract: (i) 5x from 2x (ii) -xy from 6xy (iii) 3a from 5b (iv) -7 x from 9y (v) 10x^(2) from -7x^(2) (vi) a^(2) - b^(2) from b^(2) - a^(2)

The trend in the hydrides from Bi to N is

Express each of the following in the form b or bi, where b is a real number (x)/(i)

If x- yi = (a-bi)/(c-di) , prove that x^(2) + y^(2)= (a^(2) + b^(2))/(c^(2) + d^(2))