Find the limit of $\sqrt{4x^2-x+1}-2x$ as $x$ approaches $\infty $

Step-by-step Solution

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Final answer to the problem

$-\frac{1}{4}$
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Step-by-step Solution

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  • Solve using L'Hôpital's rule
  • Solve without using l'Hôpital
  • Solve using limit properties
  • Solve using direct substitution
  • Solve the limit using factorization
  • Solve the limit using rationalization
  • Integrate by partial fractions
  • Product of Binomials with Common Term
  • FOIL Method
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1

Applying rationalisation

$\lim_{x\to\infty }\left(\left(\sqrt{4x^2-x+1}-2x\right)\frac{\sqrt{4x^2-x+1}+2x}{\sqrt{4x^2-x+1}+2x}\right)$

Learn how to solve partial fraction decomposition problems step by step online.

$\lim_{x\to\infty }\left(\left(\sqrt{4x^2-x+1}-2x\right)\frac{\sqrt{4x^2-x+1}+2x}{\sqrt{4x^2-x+1}+2x}\right)$

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Learn how to solve partial fraction decomposition problems step by step online. Find the limit of (4x^2-x+1)^(1/2)-2x as x approaches infinity. Applying rationalisation. Multiply and simplify the expression within the limit. The power of a product is equal to the product of it's factors raised to the same power. Multiply -1 times 4.

Final answer to the problem

$-\frac{1}{4}$

Exact Numeric Answer

$-0.25$

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Function Plot

Plotting: $\sqrt{4x^2-x+1}-2x$

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7
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9
0
a
b
c
d
f
g
m
n
u
v
w
x
y
z
.
(◻)
+
-
×
◻/◻
/
÷
2

e
π
ln
log
log
lim
d/dx
Dx
|◻|
θ
=
>
<
>=
<=
sin
cos
tan
cot
sec
csc

asin
acos
atan
acot
asec
acsc

sinh
cosh
tanh
coth
sech
csch

asinh
acosh
atanh
acoth
asech
acsch

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