Sir/ma'am Question 19 to 21 Sir/ma'am Question 19 to 21 Ifexpression - e R x: 4 bx*c2 (c) these (a) only one value of 0 (c) for no valueof0 'fu and pare cose sin 38 (b) off (d) two of Share with your friends Share 0 Aarushi Mishra answered this 19.Since 0<α<π4, therefore sinα<cosαsin α-cos α<0x-sin αx-cosα-2=x2-sin α+cos α+sin α cos α-2=0Since coefficient of x2 is positive. So it will be an upward parabolaNote: We will use location of rootsLet px=x-sin αx-cosα-2psin α=sin α-sin αsin α-cos α-2=-2<0pcos α=cos α-sin αcos α-cos α-2=-2<0This means sin α and cos α lie between the roots of the parabola.Hence both the roots will lie outside the interval sin α, cos αThereforeRoots lie in the interval -∞, sin α∪cos α, ∞ For remaining queries. Post them in a new thread 0 View Full Answer Student answered this @ns yourself -5 Ms Eccentric answered this Hello Om ! Do you mind telling me, what book is it ? 0 Prianne Roche answered this Mujhe patha nahi -2
