हिंदी

If y = tanx, find dddydx. - Mathematics and Statistics

Advertisements
Advertisements

प्रश्न

If y = `sqrt(tansqrt(x)`, find `("d"y)/("d"x)`.

योग

उत्तर

y = `sqrt(tansqrt(x)`

Differentiating w.r.t. x, we get

`("d"y)/("d"x) = "d"/("d"x)(sqrt(tansqrt(x)))`

= `1/(2sqrt(tansqrt(x)))*"d"/("d"x)(tansqrt(x))`

= `1/(2sqrt(tansqrt(x)))*sec^2(sqrt(x))*"d"/("d"x)(sqrt(x))`

= `(sec^2sqrt(x))/(2sqrt(tansqrt(x)))*1/(2sqrt(x))`

∴ `("d"y)/("d"x) = (sec^2sqrt(x))/(4sqrtxsqrt(tansqrt(x))`

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2.1: Differentiation - Short Answers I

वीडियो ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्न

Find `dy/dx` in the following:

xy + y2 = tan x + y


Find `dy/dx` in the following.

x3 + x2y + xy2 + y3 = 81


Find `dy/dx` in the following:

sin2 x + cos2 y = 1


if `(x^2 + y^2)^2 = xy` find `(dy)/(dx)`


If for the function 

\[\Phi \left( x \right) = \lambda x^2 + 7x - 4, \Phi'\left( 5 \right) = 97, \text { find } \lambda .\]


Examine the differentialibilty of the function f defined by

\[f\left( x \right) = \begin{cases}2x + 3 & \text { if }- 3 \leq x \leq - 2 \\ \begin{array}xx + 1 \\ x + 2\end{array} & \begin{array} i\text { if } - 2 \leq x < 0 \\\text {  if } 0 \leq x \leq 1\end{array}\end{cases}\] 


If f (x) = |x − 2| write whether f' (2) exists or not.


If  \[\lim_{x \to c} \frac{f\left( x \right) - f\left( c \right)}{x - c}\]  exists finitely, write the value of  \[\lim_{x \to c} f\left( x \right)\]


Find `"dy"/"dx"` ; if x = sin3θ , y = cos3θ


Differentiate e4x + 5 w.r..t.e3x


Find `(dy)/(dx) if y = cos^-1 (√x)`


Find `(dy)/(dx)` if `y = sin^-1(sqrt(1-x^2))`


If x = tan-1t and y = t3 , find `(dy)/(dx)`.


Find `"dy"/"dx"` if x = at2, y = 2at.


Find `"dy"/"dx"` if x = a cot θ, y = b cosec θ


Find `"dy"/"dx"`, if : `x = cos^-1(4t^3 - 3t), y = tan^-1(sqrt(1 - t^2)/t)`.


Find `"dy"/"dx"` if : x = cosec2θ, y = cot3θ at θ= `pi/(6)`


Find `"dy"/"dx"` if : x = t2 + t + 1, y = `sin((pit)/2) + cos((pit)/2) "at"  t = 1`


If x = `(t + 1)/(t - 1), y = (t - 1)/(t + 1), "then show that"  y^2 + "dy"/"dx"` = 0.


DIfferentiate x sin x w.r.t. tan x.


Differentiate `sin^-1((2x)/(1 + x^2))w.r.t. cos^-1((1 - x^2)/(1 + x^2))`


Differentiate `tan^-1((x)/(sqrt(1 - x^2))) w.r.t. sec^-1((1)/(2x^2 - 1))`.


If x = cos t, y = emt, show that `(1 - x^2)(d^2y)/(dx^2) - x"dy"/"dx" - m^2y` = 0.


If `sec^-1((7x^3 - 5y^3)/(7^3 + 5y^3)) = "m", "show"  (d^2y)/(dx^2)` = 0.


If 2y = `sqrt(x + 1) + sqrt(x - 1)`, show that 4(x2 – 1)y2 + 4xy1 – y = 0.


If x = a sin t – b cos t, y = a cos t + b sin t, show that `(d^2y)/(dx^2) = -(x^2 + y^2)/(y^3)`.


Find the nth derivative of the following : (ax + b)m 


Find the nth derivative of the following : cos x


Find the nth derivative of the following : sin (ax + b)


Find the nth derivative of the following : cos (3 – 2x)


Choose the correct option from the given alternatives : 

Let `f(1) = 3, f'(1) = -(1)/(3), g(1) = -4 and g'(1) =-(8)/(3).` The derivative of `sqrt([f(x)]^2 + [g(x)]^2` w.r.t. x at x = 1 is 


Choose the correct option from the given alternatives :

If y = sec (tan –1x), then `"dy"/"dx"` at x = 1, is equal to


Choose the correct option from the given alternatives :

If f(x) = `sin^-1((4^(x + 1/2))/(1 + 2^(4x)))`, which of the following is not the derivative of f(x)?


Choose the correct option from the given alternatives :

If `xsqrt(y + 1) + ysqrt(x + 1) = 0 and x ≠ y, "then" "dy"/"dx"` = ........


Suppose that the functions f and g and their derivatives with respect to x have the following values at x = 0 and x = 1: 

x f(x) g(x) f')x) g'(x)
0 1   5 `(1)/(3)`
1 3 – 4 `-(1)/(3)` `-(8)/(3)`

(i) The derivative of f[g(x)] w.r.t. x at x = 0 is ......
(ii) The derivative of g[f(x)] w.r.t. x at x = 0 is ......
(iii) The value of `["d"/"dx"[x^(10) + f(x)]^(-2)]_(x = 1_` is ........
(iv) The derivative of f[(x + g(x))] w.r.t. x at x = 0 is ...


Differentiate the following w.r.t. x : `tan^-1((sqrt(x)(3 - x))/(1 - 3x))`


Differentiate the following w.r.t. x : `tan^-1[sqrt((sqrt(1 + x^2) + x)/(sqrt(1 + x^2) - x))]`


If `xsqrt(1 - y^2) + ysqrt(1 - x^2)` = 1, then show that `"dy"/"dx" = -sqrt((1 - y^2)/(1 - x^2)`.


If sin y = x sin (a + y), then show that `"dy"/"dx" = (sin^2(a + y))/(sina)`.


Differentiate log `[(sqrt(1 + x^2) + x)/(sqrt(1 + x^2 - x)]]` w.r.t. cos (log x).


If y2 = a2cos2x + b2sin2x, show that `y + (d^2y)/(dx^2) = (a^2b^2)/y^3`


Find `"dy"/"dx" if, sqrt"x" + sqrt"y" = sqrt"a"`


Find `"dy"/"dx"` if, x3 + x2y + xy2 + y3 = 81


Find `"dy"/"dx"` if, yex + xey = 1 


Find `"dy"/"dx"` if, xy = log (xy)


Choose the correct alternative.

If x = `("e"^"t" + "e"^-"t")/2, "y" = ("e"^"t" - "e"^-"t")/2`  then `"dy"/"dx"` = ? 


State whether the following is True or False:

The derivative of `"x"^"m"*"y"^"n" = ("x + y")^("m + n")` is `"x"/"y"`


If `"x"^7*"y"^9 = ("x + y")^16`, then show that `"dy"/"dx" = "y"/"x"`


If x2 + y2 = 1, then `(d^2x)/(dy^2)` = ______.


If x = sin θ, y = tan θ, then find `("d"y)/("d"x)`.


If `sqrt(x) + sqrt(y) = sqrt("a")`, then `("d"y)/("d"x)` is ______


`(dy)/(dx)` of `xy + y^2 = tan x + y` is


Find `(dy)/(dx)` if x + sin(x + y) = y – cos(x – y)


If 2x + 2y = 2x+y, then `(dy)/(dx)` is equal to ______.


If log(x + y) = log(xy) + a then show that, `dy/dx = (-y^2)/x^2`


Find `dy/dx` if, x = `e^(3t)`, y = `e^sqrtt`


If log (x + y) = log (xy) + a then show that, `dy/dx = (−y^2)/x^ 2`


Find `dy/dx if , x = e^(3t) , y = e^sqrtt`


Find `dy/dx` if, `x = e^(3t), y = e^sqrtt`


If log(x + y) = log(xy) + a then show that, `dy/dx = (−y^2)/x^2`


If log(x + y) = log(xy) + a then show that, `dy/dx=(-y^2)/x^2`


Find `dy/dx"if", x= e^(3t), y=e^sqrtt`


If log(x + y) = log(xy) + a then show that, `dy/dx = (-y^2)/x^2`


If log(x + y) = log(xy) + a, then show that `dy/dx = (-y^2)/x^2`


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×