Trigonometric Function MCQ Quiz in বাংলা - Objective Question with Answer for Trigonometric Function - বিনামূল্যে ডাউনলোড করুন [PDF]

গণনা

\(\lim \limits_{x\rightarrow 0} \dfrac{1-\cos 2x}{x(\tan 4x)}(3+\cos x)\)

⇒ \(\lim \limits_{x\rightarrow 0} 2\left(\dfrac{\sin x}{x}\right)^{2}.\dfrac{1}{4}\left(\dfrac{4x}{\tan 4x }\right)(3+\cos x)\)

⇒ \(2\times 1\times\dfrac{1}{4}\times 1\times(3+1)=2\)

অতএব, বিকল্প 3 সঠিক।

গণনা

\(\lim \limits_{x\rightarrow 0} \dfrac{1-\cos 2x}{x(\tan 4x)}(3+\cos x)\)

⇒ \(\lim \limits_{x\rightarrow 0} 2\left(\dfrac{\sin x}{x}\right)^{2}.\dfrac{1}{4}\left(\dfrac{4x}{\tan 4x }\right)(3+\cos x)\)

⇒ \(2\times 1\times\dfrac{1}{4}\times 1\times(3+1)=2\)

অতএব, বিকল্প 3 সঠিক।