Logarithmic Functions

Logarithmic Functions

10th - 12th Grade

8 Qs

quiz-placeholder

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Logarithmic Functions

Logarithmic Functions

Assessment

Quiz

Mathematics

10th - 12th Grade

Practice Problem

Medium

Created by

วีรยุทธ วิริยะศิริพจน์

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

ข้อใด ไม่เป็น ฟังก์ชันลอการิทึม

y=log23xy=\log_{\frac{2}{3}}x

y=log1xy=\log_1x

y=log2xy=-\log_2x

y=log10xy=\log_{10}x

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

ข้อใดแตกต่างจากข้ออื่น

y=log2xy=\log_{-2}x

y=log2xy=-\log_2x

y=log2(1x)y=\log_2\left(\frac{1}{x}\right)

y=log12xy=\log_{\frac{1}{2}}x

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

ข้อใดเป็นฟังก์ชันเพิ่ม

y=log89xy=\log_{\frac{8}{9}}x

y=log0.9xy=\log_{0.9}x

y=log10xy=\log_{-10}x

y=log13xy=-\log_{\frac{1}{3}}x

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

ข้อใดเป็นฟังก์ชันลด

y=log10xy=-\log_{10}x

y=log1xy=\log_1x

y=log1.5xy=\log_{1.5}x

y=log109xy=\log_{\frac{10}{9}}x

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 y=10xy=10^x  มีฟังก์ชันผกผัน (inverse) คือ 

 y=logx10y=\log_x10  

 x=log10yx=\log_{10}y  

 y=log10xy=\log_{10}x  

 y=log110xy=\log_{\frac{1}{10}}x  

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 y=log3(x5)+7y=\log_3\left(x-5\right)+7  กราฟมีโดเมนคือ

 (7, )\left(7,\ \infty\right)  

 (5, )\left(5,\ \infty\right)  

 (7, )\left(-7,\ \infty\right)  

 (5, )\left(-5,\ \infty\right)  

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 y=log2(x+5)3y=\log_2\left(x+5\right)-3  เส้นกำกับแนวตั้งคือ

 x=5x=-5  

 x=3x=-3  

 x=5x=5  

 x=3x=3  

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