Find the range of -a- for which -a ax2 - 3x - 4 - 0 - x - R b ax2 - 4x - 2 - 0 - x - R

(a) a x ^ 2 +3x+4 gt;0 forall xϵ R D lt;0 9 4a× 4 lt;0 9 16a lt;0 16a gt;9 a gt; 3 4 , aϵ ( 3 4 ,∞ ) (b) ...

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Definition of Functions

Find the rang...

Question

Find the range of $^{'} a^{'}$ for which :
(a) $a x^{2} + 3 x + 4 > 0$ $\forall x \in R$ (b) $a x^{2} + 4 x - 2 < 0$ $\forall x \in R$

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