ALEKS Math Placement Exam Questions with Revised Answers
6 views 0 purchase
Course
ALEKS Math Placement
Institution
ALEKS Math Placement
ALEKS Math Placement Exam Questions with Revised Answers
When you're trying to find the width do you disregard negative answers? - Answer-yes
When the number under the radical is large should you trust that it's simplified fully? - Answer-No (it's probably not fam)
sqrt(a/b) = - Answer-sq...
ALEKS Math Placement Exam Questions
with Revised Answers
When you're trying to find the width do you disregard negative answers? - Answer-yes
When the number under the radical is large should you trust that it's simplified fully? -
Answer-No (it's probably not fam)
sqrt(a/b) = - Answer-sqrt(a)/sqrt(b)
What should you do any time you solve by squaring? - Answer-Plug the answers back
in (to double check)
Hw do you find the domain of an equation with a radical? - Answer-Set the value under
the radical equal to 0. IGNORE values outside the radical. (The domain ONLY includes
values that make the numbers under the radical greater than or equal to 0)
What helps when you're trying to simplify a radical with a power higher than 2? -
Answer-Writing out a table with perfect roots of the power
What is the range of an inverse function? - Answer-The domain of the original function
When finding the domain of composition functions should you find the domain of the
simplified function or the unsimplified function? - Answer-The unsimplified function
(ESPECIALLY if there radicals)
Should you leave negatives in the denominator? - Answer-no (multiply by everything
negative 1)
log_a c = b if - Answer-a^(b) = c
log_6 36 = 2 - Answer-6^2 = 36
log - Answer-log_10
What do you do for exponential growth or decay problems? - Answer-initial x
percent^time
log_a (xy) - Answer-log_a x + log_a y
log_a(x/y) - Answer-log_a x - log_a y
, log_a x^r - Answer-rlog_a x
Should you round down when a problem asks for the smallest whole number? - Answer-
no (round up to the next whole number regardless of the decimal size- it can be less
than .5 and you'd still round up)
log_e - Answer-ln
If two logs with the same base are on different sides of an equation can you cancel the
logs? - Answer-yes (queen:3)
Can you take the log of a negative number? - Answer-NO
What do you do when solving complex log/exponential equations? - Answer-distribute
and factor
What is -log when graphing? - Answer-a reflection about the x axis (multiply y
coordinates by negative 1)
What do you need to change when graphing log transformations that involve a change
in x coordinate? - Answer-The domain and vertical asymptote
What is the vertical asymptote of a normal log equation? - Answer-the y axis
How do you complete the square? - Answer-Divide the middle coordinate by 2, square it
(This is the third coefficient) , ADD THIS TO THE OTHER SIDE OF THE EQUATION
AS WELL
What is the equation of a circle - Answer-(x-h)^2 + (y-k)^2 = r^2
What is the center of the circle (x-h)^2 + (y-k)^2 = r^2 - Answer-(h,k) (h -> -h)
What is the radius of the circle (x-h)^2 + (y-k)^2 = r^2 - Answer-r
You graph negative angles in standard form - Answer-clockwise
You graph positive angles in standard form - Answer-counterclockwise
How do you find the value of an angle? - Answer-Find its coordinate on the unit circle
What are the Pythagorean identities? - Answer-sin^2 + cos^2 = 1
tan^2 + 1 = sec^2
cot^2 + 1 = csc^2
graph ≥, ≤ - Answer-solid line
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Scholarsstudyguide. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
