Simplify the function, observe that the highest degree is 4. The number of turning point is described by the highest exponent minus one.
11. b
Why b?
Observe the function, the highest degree is 4. If the highest degree or exponent is even, the graph's left and right both rise or fall to the similar direction. If it is odd, the end of the graph goes into opposite directions. When does the graph falls? It falls if the most leading coefficient term is negative. If it is positive, it is rising.
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Verified answer
Solution:
10. c
Why c?
Simplify the function, observe that the highest degree is 4. The number of turning point is described by the highest exponent minus one.
11. b
Why b?
Observe the function, the highest degree is 4. If the highest degree or exponent is even, the graph's left and right both rise or fall to the similar direction. If it is odd, the end of the graph goes into opposite directions. When does the graph falls? It falls if the most leading coefficient term is negative. If it is positive, it is rising.
Answer:
10. D
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