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3 years ago

What research methods do psychologists use, and for what purposes?

Advanced Placement (AP)

1 answer:

BabaBlast [244]3 years ago

5 0

Answer:

Case studies, surveys, naturalistic observation, and laboratory observation are examples of descriptive or correlational research methods. Using these methods, researchers can describe different events, experiences, or behaviors and look for links between them.

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Read this excerpt adapted from “A Brave Lad.” This story originally appeared in Chatterbox, a book of stories edited by J. Erski

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. He was kind-hearted, unselfish, and always willing to give anything that he had to his companions.

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3 years ago

Read 2 more answers

The graph of x^2=-2+y+5cosy is shown for y=11

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(a)

We have been given an equation $x^{2}=-2+y+5cosy$ . Upon taking derivative of this equation with respect to x on both the sides, we get:

$2x=0+\frac{dy}{dx}+5(-siny)\frac{dy}{dx}\\2x=(1-5siny)\frac{dy}{dx}\Rightarrow \frac{dy}{dx}=\frac{2x}{1-5siny}$

(b)

In order to write the equation of tangent line, we need to find the slope of the line. We know that point (3,11) lies on the graph. Therefore, we write the slope of the tangent as:

$\text{Slope}=\frac{dy}{dx}=\frac{2(3)}{1-5sin(11)}=1$

Therefore, equation of tangent line is:

$y-y_{1}=m(x-x_{1})\Rightarrow y-11=1(x-3)\\y-11=x-3\\y=x+8$

(c)

We know that slope of tangent is given as $\frac{dy}{dx}=\frac{2x}{1-5siny}$ . The tangent will be vertical when denominator of slope is zero, that is:

$1-5siny=0\Rightarrow siny=\frac{1}{5}\Rightarrow y=arcsin(\frac{1}{5})\\y=1.732,1.525, 3.063 \text{ etc.}$

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The person is a drug addict

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Why do some disaccharides give positive Benedict’s tests while other disaccharides give negative tests?

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