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Chapter 4: Q. 1 (page 209)

Find f(-1)if,

f(x)=2x2-x

Short Answer

Expert verified

The value off(-1)is3.

Step by step solution

01

Step 1. Given information.

The given function is,

f(x)=2x2-x.

02

Step 2. Solving the function.

On substituting x=-1in the given function we get,

f(-1)=2-12--1=21+1=2+1=3

Therefore the value,

f(-1)=3.

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Most popular questions from this chapter

True or False : The graph off(x)=xx-3 is above the x-axis for x<0or x>3, so the solution set of the inequality xx-3鈮�0is {x:x鈮�0orx鈮�3}..

Graph each rational function using transformations.

R(x)=1x-1+1

The concentration C of a certain drug in a patient's bloodstream t hours after injection is given by

Ct=50tt2+25

Part (a): Find the horizontal asymptote of Ct. What happens to the concentration of the drug as t increases?

Part (b): Using your graphing utility, graph C=Ct.

Part (c): Determine the time at which the concentration is highest.

Solve the given inequality algebraically.

x+1x-1>0

Find the vertical, horizontal, and oblique asymptotes, if any, of each rational function.

G(x)=x4-1x2-x
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