हिंदी

If Sin Y = X Sin ( a + Y ) , Then D Y D X is (A) Sin a Sin a Sin 2 ( a + Y ) - Mathematics

Advertisements
Advertisements

प्रश्न

If \[\sin y = x \sin \left( a + y \right), \text { then }\frac{dy}{dx} \text { is}\] ____________ .

विकल्प

  • \[\frac{\sin a}{\sin a \sin^2 \left( a + y \right)}\]

  • \[\frac{\sin^2 \left( a + y \right)}{\sin a}\]

  • \[\sin a \sin^2 \left( a + y \right)\]

  • \[\frac{\sin^2 \left( a - y \right)}{\sin a}\]

MCQ
Advertisements

उत्तर

\[\frac{\sin^2 \left( a + y \right)}{\sin a}\]

 

\[\text { We have,} \sin y = x \sin\left( a + y \right)\]

\[\Rightarrow \frac{d}{dx}\left( \sin y \right) = \frac{d}{dx}\left[ x \sin\left( a + y \right) \right]\]
\[ \Rightarrow \cos y\frac{dy}{dx} = \sin\left( a + y \right)\frac{d}{dx}\left( x \right) + x\frac{d}{dx}\left\{ \sin\left( a + y \right) \right\}\]
\[ \Rightarrow \cos y\frac{dy}{dx} = \sin\left( a + y \right) \times 1 + x \cos\left( a + y \right)\frac{dy}{dx}\]
\[ \Rightarrow \cos y\frac{dy}{dx} = \sin\left( a + y \right) + x \cos\left( a + y \right)\frac{dy}{dx}\]
\[ \Rightarrow \cos y\frac{dy}{dx} - x \cos\left( a + y \right)\frac{dy}{dx} = \sin\left( a + y \right)\]
\[ \Rightarrow \left\{ \cos y - x \cos \left( a + y \right) \right\}\frac{dy}{dx} = \sin\left( a + y \right)\]
\[ \Rightarrow \left\{ \cos y - \frac{\sin y}{\sin\left( a + y \right)} \times \cos\left( a + y \right) \right\}\frac{dy}{dx} = \sin\left( a + y \right) .............\binom{\because \sin y = 2 \sin x \cos x}{ \therefore x = \frac{\sin y}{\sin\left( a + y \right)}}\]
\[ \Rightarrow \left\{ \frac{\sin\left( a + y \right) \cos y - \sin y \cos\left( a + y \right)}{\sin\left( a + y \right)} \right\}\frac{dy}{dx} = \sin\left( a + y \right)\]
\[ \Rightarrow \frac{\sin\left( a + y - y \right)}{\sin\left( a + y \right)} \times \frac{dy}{dx} = \sin\left( a + y \right) \]
\[ \Rightarrow \frac{dy}{dx} = \frac{\sin^2 \left( a + y \right)}{\sin a}\]

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 11: Differentiation - Exercise 11.10 [पृष्ठ १२०]

APPEARS IN

आरडी शर्मा Mathematics [English] Class 12
अध्याय 11 Differentiation
Exercise 11.10 | Q 19 | पृष्ठ १२०

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

Differentiate the following functions from first principles eax+b.


Differentiate sin (3x + 5) ?


Differentiate tan2 x ?


Differentiate log7 (2x − 3) ?


Differentiate \[3^{x \log x}\] ?


Differentiate \[e^{\tan 3 x} \] ?


Differentiate \[\frac{2^x \cos x}{\left( x^2 + 3 \right)^2}\]?


Differentiate \[\sin^{- 1} \left( \frac{x + \sqrt{1 - x^2}}{\sqrt{2}} \right), - 1 < x < 1\] ?


Differentiate \[\sin^{- 1} \left\{ \frac{\sqrt{1 + x} + \sqrt{1 - x}}{2} \right\}, 0 < x < 1\] ?


Differentiate \[\tan^{- 1} \left( \frac{a + x}{1 - ax} \right)\] ?


Differentiate \[\tan^{- 1} \left( \frac{a + b \tan x}{b - a \tan x} \right)\] ?


Differentiate \[\tan^{- 1} \left( \frac{a + bx}{b - ax} \right)\] ?


Differentiate 

\[\tan^{- 1} \left( \frac{\cos x + \sin x}{\cos x - \sin x} \right), \frac{\pi}{4} < x < \frac{\pi}{4}\] ?


Differentiate \[\left( \sin x \right)^{\cos x}\] ?


Differentiate \[x^{\sin^{- 1} x}\]  ?


If \[y = \sin \left( x^x \right)\] prove that  \[\frac{dy}{dx} = \cos \left( x^x \right) \cdot x^x \left( 1 + \log x \right)\] ?


If \[e^y = y^x ,\] prove that\[\frac{dy}{dx} = \frac{\left( \log y \right)^2}{\log y - 1}\] ?


If \[y^x + x^y + x^x = a^b\] ,find \[\frac{dy}{dx}\] ?


If \[y = \left( \tan x \right)^{\left( \tan x \right)^{\left( \tan x \right)^{. . . \infty}}}\], prove that \[\frac{dy}{dx} = 2\ at\ x = \frac{\pi}{4}\] ?

 


If \[y = \left( \cos x \right)^{\left( \cos x \right)^{\left( \cos x \right) . . . \infty}}\],prove that \[\frac{dy}{dx} = - \frac{y^2 \tan x}{\left( 1 - y \log \cos x \right)}\]?

 


\[\sin x = \frac{2t}{1 + t^2}, \tan y = \frac{2t}{1 - t^2}, \text { find }  \frac{dy}{dx}\] ?

Differentiate\[\tan^{- 1} \left( \frac{\sqrt{1 + x^2} - 1}{x} \right)\] with respect to \[\sin^{-1} \left( \frac{2x}{1 + x^2} \right)\], If \[- 1 < x < 1, x \neq 0 .\] ?


Differentiate \[\tan^{- 1} \left( \frac{2x}{1 - x^2} \right)\] with respect to \[\cos^{- 1} \left( \frac{1 - x^2}{1 + x^2} \right),\text {  if }0 < x < 1\] ?


If \[f\left( 1 \right) = 4, f'\left( 1 \right) = 2\] find the value of the derivative of  \[\log \left( f\left( e^x \right) \right)\] w.r. to x at the point x = 0 ?

 


If \[y = x \left| x \right|\] , find \[\frac{dy}{dx} \text{ for } x < 0\] ?


If \[\left| x \right| < 1 \text{ and y} = 1 + x + x^2 + . . \]  to ∞, then find the value of  \[\frac{dy}{dx}\] ?


The differential coefficient of f (log x) w.r.t. x, where f (x) = log x is ___________ .


Differential coefficient of sec(tan−1 x) is ______.


If \[f\left( x \right) = \left( \frac{x^l}{x^m} \right)^{l + m} \left( \frac{x^m}{x^n} \right)^{m + n} \left( \frac{x^n}{x^l} \right)^{n + 1}\] the f' (x) is equal to _____________ .


If \[\sin^{- 1} \left( \frac{x^2 - y^2}{x^2 + y^2} \right) = \text { log a then } \frac{dy}{dx}\] is equal to _____________ .


Find the second order derivatives of the following function  log (sin x) ?


If y = cos−1 x, find \[\frac{d^2 y}{d x^2}\] in terms of y alone ?


If y = a xn + 1 + bxn and \[x^2 \frac{d^2 y}{d x^2} = \lambda y\]  then write the value of λ ?


If \[y = \left| \log_e x \right|\] find\[\frac{d^2 y}{d x^2}\] ?


If x = at2, y = 2 at, then \[\frac{d^2 y}{d x^2} =\] 

 


If x = t2, y = t3, then \[\frac{d^2 y}{d x^2} =\] 

 


If xy − loge y = 1 satisfies the equation \[x\left( y y_2 + y_1^2 \right) - y_2 + \lambda y y_1 = 0\]

 


\[\text { If } y = \left( x + \sqrt{1 + x^2} \right)^n , \text { then show that }\]

\[\left( 1 + x^2 \right)\frac{d^2 y}{d x^2} + x\frac{dy}{dx} = n^2 y .\]


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×