Home
Class 12
MATHS
If f(x)=2x^(2)+3x-5, then what is f'(0)+...

If `f(x)=2x^(2)+3x-5,` then what is `f'(0)+3f'(-1)` equal to?

A

`-1`

B

0

C

1

D

2

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to find the value of \( f'(0) + 3f'(-1) \) for the function \( f(x) = 2x^2 + 3x - 5 \). ### Step 1: Find the derivative of \( f(x) \). The function is given as: \[ f(x) = 2x^2 + 3x - 5 \] To find the derivative \( f'(x) \), we apply the power rule: \[ f'(x) = \frac{d}{dx}(2x^2) + \frac{d}{dx}(3x) + \frac{d}{dx}(-5) \] Calculating each term: - The derivative of \( 2x^2 \) is \( 4x \). - The derivative of \( 3x \) is \( 3 \). - The derivative of a constant \( -5 \) is \( 0 \). Combining these results, we have: \[ f'(x) = 4x + 3 \] ### Step 2: Calculate \( f'(0) \). Now we substitute \( x = 0 \) into the derivative: \[ f'(0) = 4(0) + 3 = 3 \] ### Step 3: Calculate \( f'(-1) \). Next, we substitute \( x = -1 \) into the derivative: \[ f'(-1) = 4(-1) + 3 = -4 + 3 = -1 \] ### Step 4: Compute \( f'(0) + 3f'(-1) \). Now we can compute: \[ f'(0) + 3f'(-1) = 3 + 3(-1) = 3 - 3 = 0 \] ### Final Answer: Thus, the value of \( f'(0) + 3f'(-1) \) is: \[ \boxed{0} \]

To solve the problem, we need to find the value of \( f'(0) + 3f'(-1) \) for the function \( f(x) = 2x^2 + 3x - 5 \). ### Step 1: Find the derivative of \( f(x) \). The function is given as: \[ f(x) = 2x^2 + 3x - 5 \] ...
Promotional Banner

Topper's Solved these Questions

  • DEFINITE INTEGRATION & ITS APPLICATION

    NDA PREVIOUS YEARS|Exercise DIRECTIONS|60 Videos
  • DIFFERENTIAL EQUATION

    NDA PREVIOUS YEARS|Exercise MCQs|119 Videos

Similar Questions

Explore conceptually related problems

if f(x)=2x^(2)+3x-5 , the what is f'(0)+3f'(-1)=

If f be a function given by f(x) =2x^(2)+3x-5 . Then f'(0)=mf'(-1), where m is equal to

If f(x) =|(1, x, x+1),(2x, x(x-1), x(x+1)), (3x(x-1), 2(x-1)(x-2), x(x+1)(x-1))| then what is f(-1) +f(0) +f(1) equal to ?

If f(x)=(2)/(3)x+(3)/(2),x""inR , then what is f^(-1)(x) equal to ?

Let f: R to R be defined by f(x) = 5^(2x)/(5^(2x) + 5) , then f(x) + f(1-x) is equal to

If f(x+3)=x^(2)-1, then f(x) is equal to

If f(x)=2x^(2)+3x then f'(0)+2f'(-1)=

If f(x)=x^(2)+3x-5, find f(0),f(1) and f((1)/(2))

NDA PREVIOUS YEARS-DERIVATIVES-MCQs
  1. The derivative of sec^(2)x with respect to tan^(2)x is

    Text Solution

    |

  2. What is the derivative of x^(3) with respect to x^(2)?

    Text Solution

    |

  3. If f(x)=2x^(2)+3x-5, then what is f'(0)+3f'(-1) equal to?

    Text Solution

    |

  4. What is the derivative of sin(sinx)?

    Text Solution

    |

  5. What is the derivative of |x-1| at x = 2?

    Text Solution

    |

  6. What is the derivative of sqrt((1+cosx)/(1-cosx))?

    Text Solution

    |

  7. If z=f" of "(x)=x^(2) where f(x)=x^(2), then what is (dz)/(dx) euqal t...

    Text Solution

    |

  8. Find (dy)/(dx) , when x=a\ (costheta+thetasintheta) and y=a(sintheta-t...

    Text Solution

    |

  9. if x=a(costheta+thetasintheta) , y=a(sintheta-thetacostheta) then (d^...

    Text Solution

    |

  10. Consider the curve x=a(cos theta+thetasin theta)and y=a(sin theta-thet...

    Text Solution

    |

  11. Given that d/dx ((1+x^2+x^4)/(1+x+x^2))=Ax+B What is the value of A?

    Text Solution

    |

  12. If d/(dx)((1+x^2+x^4)/(1+x+x^2))=a x+b , then the value of a and b are...

    Text Solution

    |

  13. Differentiate tan^(-1)((sqrt(1+x^2-1))/x) with respect to tan^(-1)x...

    Text Solution

    |

  14. The derivative of ln(x+sinx) with respect to (x+cosx) is

    Text Solution

    |

  15. If y=cot^(-1)[(sqrt(1+sinx)+sqrt(1-sinx))/(sqrt(1+sinx)-sqrt(1-sinx))]...

    Text Solution

    |

  16. If x^(a)y^(b)=(x-y)^(a+b), then the value of (dy)/(dx)-(y)/(x) is equa...

    Text Solution

    |

  17. If s=sqrt(t^(2)+1), then (d^(2)s)/(dt^(2)) is equal to

    Text Solution

    |

  18. int(dx)/(1+e^(-x)) is equal to

    Text Solution

    |

  19. Let f:R rarr R be a function such that f(x)=x^(3)+x^(2)f'(1)+xf''(2)...

    Text Solution

    |

  20. Let f:R rarr R be a function such that f(x)=x^(3)+x^(2)f'(1)+xf''(2)...

    Text Solution

    |