19. It is given that f(x)=√x and g(x)=√√-x, then what is the domain and range for f(x)=√x_and_g(x)=√√−x f(x)+g(x) ? A. Domain= {xЄR }, Range={_yЄIR,y≥0 } B. Domain = {XER }, Range = { yЄRy>0 } C. Domain= {_xЄR,x=0 }, Range = {_yЄR,y=0} D. Domain= {_xЄR,x=0 }, Range={_yЄR, y≥0 } 20. The figure shows the graph of y=log₁x and the graph of _y=log x on the same rectangular coordinate system, where a and b are positive constants. A vertical line cuts the two graphs at point A and B respectively and it cuts the x-axis at point C. Which of the following is/are true? I. a>1 II. a>b AB III. =loga BC y=log₁x B y=logb x A. I only B. II only C. I and III only D. II and III only

19. It is given that f(x)=√x and g(x)=√√-x, then what is the domain and range for f(x)=√x_and_g(x)=√√−x f(x)+g(x) ? A. Domain= {xЄR }, Range={_yЄIR,y≥0 } B. Domain = {XER }, Range = { yЄRy>0 } C. Domain= {_xЄR,x=0 }, Range = {_yЄR,y=0} D. Domain= {_xЄR,x=0 }, Range={_yЄR, y≥0 } 20. The figure shows the graph of y=log₁x and the graph of _y=log x on the same rectangular coordinate system, where a and b are positive constants. A vertical line cuts the two graphs at point A and B respectively and it cuts the x-axis at point C. Which of the following is/are true? I. a>1 II. a>b AB III. =loga BC y=log₁x B y=logb x A. I only B. II only C. I and III only D. II and III only

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter8: Introduction To Functions

Section8.8: Linear And Quadratic Functions

Problem 4ST

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