## What wavelength should be used to measure the absorbances for the kinetics trials?

Marcus Firstman Jul 18, 2014 @04:16 PM PDT Post Lab DISCUSSION & CALCULATIONS (1)What wavelength should be used to measure the absorbances for the kinetics trials? The wavelength of max absorbance, which was 573 nm.

## What does a negative K mean?

No. A rate constant(k) cannot be negative because it is measuring how fast the concentration changes over time so it cannot be a negative value.

## How do you know if an interval is positive or negative?

MATH – quick and easy A function is positive on intervals (read the intervals on the x-axis), where the graph line lies above the x-axis. A function is negative on intervals (read the intervals on the x-axis), where the graph line lies below the x-axis.

## What does a zero derivative mean?

The derivative of a function, f(x) being zero at a point, p means that p is a stationary point. That is, not “moving” (rate of change is 0). For example, f(x)=x2 has a minimum at x=0, f(x)=−x2 has a maximum at x=0, and f(x)=x3 has neither.

## Where is the derivative equal to zero?

f ‘(x) = 0, Set derivative equal to zero and solve for “x” to find critical points. Critical points are where the slope of the function is zero or undefined.

## What does it mean if the first derivative is zero?

The first derivative of a point is the slope of the tangent line at that point. When the slope of the tangent line is 0, the point is either a local minimum or a local maximum. Thus when the first derivative of a point is 0, the point is the location of a local minimum or maximum.

## What is the second derivative test used for?

The second derivative may be used to determine local extrema of a function under certain conditions. If a function has a critical point for which f′(x) = 0 and the second derivative is positive at this point, then f has a local minimum here.

## How do you know if a derivative is maximum or minimum?

the graph of its derivative f ‘(x) passes through the x axis (is equal to zero). If the function goes from increasing to decreasing, then that point is a local maximum. If the function goes from decreasing to increasing, then that point is a local minimum.

## How do you find the maximum and minimum of the first derivative?

To find the critical numbers of this function, here’s what you do.

1. Find the first derivative of f using the power rule.
2. Set the derivative equal to zero and solve for x. x = 0, –2, or 2. These three x-values are the critical numbers of f.

## What is the first derivative test used for?

Finding relative extrema (first derivative test) The first derivative test is the process of analyzing functions using their first derivatives in order to find their extremum point. This involves multiple steps, so we need to unpack this process in a way that helps avoiding harmful omissions or mistakes.