CBSE[DELHI]_XII_Mathematics_2019_Set_II

If a line makes angles 90°, 135° and 45° with the x, y and z axes respectively, find its direction cosines.

Examine whether the operation * defined on R by a * b = ab + 1 is (i) a binary or not. (ii) if it is a binary operation, is it associative or not ?

Form the differential equation representing the family of curves y = e^2x (a + bx), where ‘a’and‘b’ are arbitrary constants.