Mathematics - Trigonometric Equation Question with Solution | TestHub

MathematicsTrigonometric EquationTrigonometric EquationHard2 minQB

MathematicsHardsingle choice

$x^{2} sin x + cos^{2} x e^{x} + ln^{2} x < x^{2} ∣ sin x ∣ + cos^{2} xe^{x} + ln^{2} x$ true for $x \in$

Answer:

Solution:

$∣ a + b + c ∣ < ∣ a ∣ + ∣ b ∣ + ∣ c ∣$

If $a, b, c$ do not have same sign.

So $x^{2} sin x < 0$

If $x \in (- π, 0)$

Stream:JEESubject:MathematicsTopic:Trigonometric EquationSubtopic:Trigonometric Equation

⏱ 2mℹ️ Source: QB

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