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For the curve y=5x-2x^3 , if x increases...

For the curve `y=5x-2x^3` , if `x` increases at the rate of 2 units/sec, then how fast is the slope of the curve changing when `x=3?`

Text Solution

Verified by Experts

The correct Answer is:
`-72` units/se.
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Knowledge Check

  • A point is moving on y=4-2x^(2) . The x coordiante of the point is decreasing at the rate of 5 units per second. Then the rate at which y coordinate of the point is changing when the point is at (1,2) is

    A
    5 units/sec
    B
    10 units/sec
    C
    15 units/sec
    D
    20 units/sec
  • The slope of the tangent to a curve, y = f(x) at (x, f(x)) is 2x+1. If the curve passes through the point (1,2) , then the area of the region bounded by the curve, the x -axis and the line x=1

    A
    `5/6`
    B
    `2/3`
    C
    `1/3`
    D
    `1/6`
  • If m is the slope of the tangent to the curve, e^(y) =1 +x^(2) , then,

    A
    `|m| gt 1`
    B
    `m lt 1`
    C
    `|m| lt 1`
    D
    `|m| le 1`
  • Similar Questions

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