If the equation `x^2=a x+b=0` has distinct real roots and `x^2+a|x|+b=0` has only one real root...
603 views · Published 22 September 2017 · 2:05 · Indexed 22 October 2026
Channel: Doubtnut · 2017 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If the equation `x^2=a x+b=0` has distinct real roots and `x^2+a|x|+b=0` has only one real root, then which of the following is true? `b=0, a gt0` b. `b=0, a lt0` c. `b gt0, a lt0` d. `b lt lt0, a gt gt0`
More from this channel
-
4:54
JEE MAINS 2018 Two thirds of eth students in a class are boys and the rest girls. It
is known...
-
3:35
IIT JEE RELATIONS AND FUNCTIONS Find the period of
`f(x)=sinx+tanx/2+sinx/(2^2)+t a n x/(2^3)++si...
-
3:33
IIT JEE LIMITS AND DERIVATIVES Evaluate the limit:
`("lim")_(xvec0)(sqrt(2)-sqrt(1+cosx))/(sin^2x)`
-
3:33
IIT JEE LIMITS AND DERIVATIVES Evaluate the limit:
`("lim")_(xvec0)(sqrt(2)-sqrt(1+cosx))/(sin^2x)`
-
1:41
IIT JEE TRIGONOMETRIC FUNCTIONS Prove that
`(cos10^0+sin10^0)/(cos10^0-sin 10^0)=tan55^0`
-
2:52
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS Which of the following is the solution set of the equatio...
-
4:30
IIT JEE APPLICATION OF DERIVATIVES Find the equation of tangent to the curve
`y=sin^(-1)(2x)/(1+...
-
2:48
IIT JEE APPLICATION OF DERIVATIVES Find the equation of the tangent to the
`c u r v ey={x^2sin1/...