[" If "ax^(2)+bx+c=0" has an equal roots then the "],[" AA "+-sqrt(17)c],[" (1) "+-2sqrt(AC)],[" (C) "=sqrt(AC)],[" (D) WOne of these "]

If ax^(2) +bx +c=0 has equal roots. Then c is equal to :

If ax^(2)+bx+c=0 has equal roots, 'c' is equal to

[" 43) If "a>0,b<0" ,then "lim_(x rarr0)(sqrt((1-cos2ax)))/(sin bx)" is equal to "],[[" A) "(a sqrt(2))/(b)," B) "],[" C) "(|a|sqrt(2))/(|b|)," D) "-(a sqrt(2))/(b)]-(|a|sqrt(2))/(|b|)]

If the equation (a^2+b^2)x^2-2(a c+b d)x+c^2+d^2=0 has equal roots, then (a) a b=c d (b) a d=b c (c) a d=sqrt(b c) (d) a b=sqrt(c d)

35. If the sum of the roots of ax^2 + bx +c = 0 be equal to sum of the squares, then- (A) 2ac = ab + b2 (B) 2ab-bc + c2 c (D) None of these (D) None of these (C) 2bc -ac+2

sqrt(ax^2+bx+c)

[" 0.",int sin^(-1)sqrt((x)/(a+x))dx" is equal to "],[," 1) "(x+a)tan^(-1)sqrt((x)/(a))-sqrt(ax)+C],[" 3) "(x+a)cot^(-1)sqrt((x)/(a))-sqrt(ax)+C," 2) "(x+a)tan^(-1)sqrt((x)/(a))+sqrt(ax)+C]

The roots of ax^(2)+bx+c=0, ane0 are real and unequal, if (b^(2)-4ac)

If 1,2,3 are the roots of ax^3 +bx^2 + cx +d=0 then the roots of ax sqrt(x) + bx +c sqrt (x ) +d=0 are