Find All X-Intercepts of the Function $$f ( x ) = 2 x ^ { 1 / 2 } - 3 x ^ { 1 / 4 } - 20$$

question 97

Multiple Choice

Find all x-intercepts of the function.
- $$f ( x ) = 2 x ^ { 1 / 2 } - 3 x ^ { 1 / 4 } - 20$$

• A) \[( 256,0 ) , \left( \frac { 625 } { 16 } , 0 \right)\]
• B) \[( 4,0 ) , \left( - \frac { 5 } { 2 } , 0 \right)\]
• C)(256, 0)
• D)(-4, 0), (-5, 0)

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Definitions:

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a response without any need for learning.

CS Preexposure Effect

The phenomenon where prior exposure to a conditioned stimulus without the unconditioned stimulus can inhibit the formation of a conditioned response when both are later paired.

Aversion

A strong dislike or disinclination toward something often because of anticipated negative consequences or outcomes.

Shock

A sudden and often distressing stimulus or event, which can be used in experiments as a form of aversive conditioning.