Home
Class 12
MATHS
If y=sinx+e^x ,t h e n(d^(2x))/(dy^2)= ...

If `y=sinx+e^x ,t h e n(d^(2x))/(dy^2)=` `(-sinx+e^x)^(-1)` `(sinx-e^x)/((cosx+e^x)^2)` (c) `(sinx-e^x)/((cosx+e^x)^3)` (d) `(sinx+e^x)/((cosx+e^x)^3)`

A

`(-sin x +e^(x))^(-1)`

B

`(sin x - e^(x))/((cos x +e^(x))^(2))`

C

`(sin x - e^(x))/((cos x +e^(x))^(3))`

D

`(sin x + e^(x))/((cos x +e^(x))^(3))`

Text Solution

Verified by Experts

`y=sin x +e^(x)or (dy)/(dx)=cos x +e^(x)`
`"or "(dx)/(dy)=(cos x +e^(x))^(-1)" (1)"`
`therefore" "(d^(2)x)/(dy^(2))=-(cos x +e^(x))^(-2)(-sin x +e^(x))(dx)/(dy)`
Substituting the value of `(dy)/(dx)` from (1),
`(d^(2)x)/(dy^(2))=((sin x -e^(x)))/((cos x +e^(x))^(2))(cos x +e^(x))^(-1)=(sin x-e^(x))/((cos x +e^(x))^(3))`
Promotional Banner

Topper's Solved these Questions

  • DIFFERENTIATION

    CENGAGE|Exercise Exercise (Multiple)|22 Videos
  • DIFFERENTIATION

    CENGAGE|Exercise Exercise (Comprehension)|23 Videos
  • DIFFERENTIATION

    CENGAGE|Exercise Exercise 3.9|14 Videos
  • DIFFERENTIAL EQUATIONS

    CENGAGE|Exercise Question Bank|7 Videos
  • DOT PRODUCT

    CENGAGE|Exercise DPP 2.1|15 Videos

Similar Questions

Explore conceptually related problems

If y=sinx+e^x ,t h e n(d^2x)/(dy^2)= (a) (-sinx+e^x)^(-1) (b) (sinx-e^x)/((cosx+e^x)^2) (c) (sinx-e^x)/((cosx+e^x)^3) (d) (sinx+e^x)/((cosx+e^x)^3)

If y=x+e^x, then (d^2x)/(dy^2) is (a) e^x (b) - e^x/((1+e^x)^3) (c) -e^x/((1+e^x)^3) (d) (-1)/((1+e^x)^3)

If y=(sinx)^(tanx),t h e n(dy)/(dx)= (a) (sinx)^(tanx)(1+sec^2xlogsinx) (b) tanx(sinx)^(tanx-1)cosx (c) (sinx)^(tanx) (d) sec^2xlogsinx tanx(sinx)^(tanx-1)

int((e^(x)+cosx))/(e^(x)+sinx+2)dx :

"If " int x e^(x) cosx dx=ae^(x)(b(1-x)sinx+cx cosx)+d, then

Integrate the functions e^(x)((1+sinx)/(1+cosx))

lim_(xto0)(e^(x)-e^(-x))/sinx

Differentiate y=(e^x)/(1+sinx)

If y=sqrt((1+e^(x))/(1-e^(x))) , show that (dy)/(dx)=e^(x)/((1-e^(x))sqrt(1-e^(2x))) .

Prove that (d^n)/(dx^n)(e^(2x)+e^(-2x))=2^n[e^(2x)+(-1)^n e^(-2x)]

CENGAGE-DIFFERENTIATION-Exercise (Single)
  1. Let f(x) be a polynomial of degree 3 such that f(3)=1,f^(prime)(3)=-1,...

    Text Solution

    |

  2. If y^2=a x^2+b x+c ,t h e ny^3(d^(2y))/(dx^2) is a constant a functio...

    Text Solution

    |

  3. If y=sinx+e^x ,t h e n(d^(2x))/(dy^2)= (-sinx+e^x)^(-1) (sinx-e^x)/(...

    Text Solution

    |

  4. if y= sin mx, them the value of the determinant |{:(y,,y(1),,y(...

    Text Solution

    |

  5. If f^(x)=-f(x)a n dg(x)=f^(prime)(x)a n d F(x)=(f(x/2))^2+(g(x/2))^2 ...

    Text Solution

    |

  6. Let y=1n(1+cosx)^2 . Then the value of (d^2y)/(dx^2)+2/(e^(y/2)) equal...

    Text Solution

    |

  7. x=tcost ,y=t+sintdot Then (d^(2x))/(dy^2)at t=pi/2 is (a)(pi+4)/2 (b) ...

    Text Solution

    |

  8. "If "f(x)=(x-1)^(4)(x-2)^(3)(x-3)^(2)(x-4), then the value of f'''(1)+...

    Text Solution

    |

  9. If g(x,y) = 3x^(2) - 5y + 2y^(2), x(t) =e^(t) and y(t) = cos t, then (...

    Text Solution

    |

  10. If x and y are positive real numbers such that 2log(2y - 3x) = log ...

    Text Solution

    |

  11. If x=varphi(t), y=psi(t),t h e n(d^(2y))/(dx^2) is (varphi^(prime)psi^...

    Text Solution

    |

  12. If f(x)=x^4tan(x^3)-x1n(1+x^2), then the value of (d^4(f(x)))/(dx^4) ...

    Text Solution

    |

  13. If graph of y=f(x) is symmetrical about the y-axis and that of y=g(x) ...

    Text Solution

    |

  14. Let g(x) be the inverse of an invertible function f(x), which is diffe...

    Text Solution

    |

  15. f(x)=e^x-e^(-x)-2sinx-2/3x^3dot Then the least value of n for which (d...

    Text Solution

    |

  16. Let y=f(x) and x=(1)/(z)." If "(d^(2)y)/(dx^(2))=lamda(z^(3))(dy)/(dz)...

    Text Solution

    |

  17. Let x = f(t) and y = g(t), where x and y are twice differentiable func...

    Text Solution

    |

  18. If f(x) satisfies the relation f((5x-3y)/2)=(5f(x)-3f(y))/2AAx ,y in ...

    Text Solution

    |

  19. A function f: R->R satisfies sinxcosy(f(2x+2y)-f(2x-2y)=cosxsiny(f(2x+...

    Text Solution

    |

  20. If y=asinx+bcosx ,t h e ny^2+((dy)/(dx))^2 is a function of x (b) func...

    Text Solution

    |