Precalculus Homework Answers & Questions

Help With Precalculus Homework

Precalculus is a crucial part of mathematical science. This is a necessary basis for immersing deeper into the discipline of calculus. As the subject specialists claim, deep understanding of precalculus concepts is necessary for the understanding of calculus principles.

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  • Waiting for answer The equation of state for a redlich-Kwong gas is p(t)= [(rt/...

    The equation of state for a redlich-Kwong gas is p(t)= [(rt/v-b)-(a/v(v-b)t^-1/2)] where r, a,and b are constants. Fix the volume and calculate the internal pressure of bettholot gas.

  • Waiting for answer My mathlab

    I need someone to do my mathlab for my precal class, you can find most of the answer in the internet or using mathway!!

  • Waiting for answer Verify these identities. (Show work)cosx cscx = cotxsecx / c...

    Verify these identities. (Show work)cosx cscx = cotxsecx / cotx + tanx = sinx1 - (cos^2x / 1 + sinx) = sinxcosx + sinx tanx = secxsinx - sinx cos^2x = sin^3x

  • Waiting for answer Name: _________________________Score: ______ / ______1.Find...

    Name: _________________________ Score: ______ / ______ 1. Find the indicated sum. Show your work. k = 1, (-1)^k (k + 11) = (-1)^(1) (1 + 11)= -1*(12) = -12 k = 2, (-1)^k (k + 11) = (-1)^(2) (2 + 11)= 1*(13) = 13 k = 3, (-1)^k (k + 11) = (-1)^(3) (3 + 11)= -1*(14) = -14 k = 4, (-1)^k (k + 11) =...

  • Waiting for answer I have a pre-calculus exam, the time is one hour, it is mult...

    I have a pre-calculus exam, the time is one hour, it is multiple choice it is about functions, graphs, linear equations, domain range multiplicity, etc..

  • Waiting for answer How do I use zero factor property in reverse?

    You use it to determine the polynomial function. We can use it for higher degree polynomials, but let's use a cubic as an example. Suppose we have the : -3, 2.5, and 4. So: ##x=-3## ##x+3=0## ##x=2.5## ##x=5/2## ##2x=5## multiply both sides by denominator ##2x-5=0## ##x=4## ##x-4=0## So, t...

  • Waiting for answer How do you find all unit vectors orthogonal to v=i+j+k?

    A generalised unit vector is: ##mathbf u = 1/(sqrt( 2 (alpha_2 ^2 + alpha_3 ^2 + alpha_2 alpha_3)))((- alpha_2 - alpha_3),(\alpha_2),(alpha_3))## There are an infinite number of vec...

  • Waiting for answer What is the polynomial function of lowest degree with lead c...

    ##x^3-3x^2+4x-2##, We know that the complex roots always occur in conjugate pairs. One complex root is ##1+i##, so there must be its conjugate, i.e., ##1-i## as the other root. He...

  • Waiting for answer What is velocity?

    Velocity describes the speed AND direction/heading in which an object is moving. Magnitude describes the speed in which an object is moving. Example: I drove my car 65 mph today. MAGNITUDE I drove my car 65 mph south today. VELOCITY

  • Waiting for answer What is the sum of the infinite geometric series 2+2/3+2/9+2...

    ##3## a geometric series can be defined as: ##a_n = a_1*(r)^(n-1)## where ##a_1## is the first value of the series and ##r## is the common ratio. The common ratio is ##1/3## and th...

  • Waiting for answer How do I find the magnitude and direction angle of the vecto...

    Magnitude = ##|6i-6j|=sqrt(6^2+(-6)^2)=sqrt(72)=6sqrt(2)"## Angle = ##arctan(-6/6)=arctan(-1)=-pi/4=-45°## If you draw this vector on the plane, the x-y coordinate axis, as (6,-6) because ##i## is the unit vector in the x-direction and ##j## in the y-direction. Then pictorially it might seem easier...

  • Waiting for answer How do I find the constant term of a binomial expansion?

    The expansion of a binomial is given by : ##(x+y)^n=( (n), (0) )*x^n+( (n), (1) )*x^(n-1)*y^1+...+( (n), (k) )*x^(n-k)*y^k+...+( (n), (n) )*y^n = sum_(k=0)^n*( (n), (k) )*x^(n-k)*y^k ## where ##x, y in RR##, ##k, n in NN##, and ##( (n), (k) )## denotes combinations of ##n## things taken ##k## at a...

  • Waiting for answer How do you find the recursive formula that describes the seq...

    Look at the sequence of differences, finding that it is a geometric sequence with common ratio ##2## and hence derive the recursive formula: ##a_1 = 3## ##a_(n+1) = 2a_n + 1## Wri...

  • Waiting for answer How do you find (f o g)(x) and its domain, (g o f)(x) and it...

    Given ##color(white)("XXX")f(color(blue)(x))=color(blue)(x)^2-1## and ##color(white)("XXX")g(color(red)(x))=color(red)(x)+1## Note that ##(f@g)(x)## can be written ##f(g(x))## and that ##(g@f)(x)## can be written ##g(f(x))## ##(f@g)(x) = f(color(blue)(g(x))) = color(blue)(g(x))^2-1## ##color(whit...

  • Waiting for answer What is a polynomial function for 5, i, -i?

    ##f(x)=x^3-5x^2+x-5## I have assumed that ##{5,i,-i}## are intended to be the of the function. In this case, the function can be factored as: ##color(white)("XXX")(x-5)((x-i)(x+i)#...

  • Waiting for answer What is the exact value of sin 60 degrees?

    ##sqrt(3)/2## By using special triangles and the definition of the sine function (as opposite/hypotenuse in a standard right angled triangle) we arrive at the solution. I will upl...

  • Waiting for answer What does the zero factor property mean?

    We start by defining the Zero-Product Property Zero - Product Property states that if the product of two or more factors is zero, then at least one of the factors must be zero. That is, if XY = 0, then X = 0 or Y = 0 or both X and Y are 0. Similarly, if XYZ = 0, then X = 0 or Y = 0 or Z = 0 or al...

  • Waiting for answer How do you use a calculator to evaluate the expression ##log...

    ##log 12 ~~ 1.0792## Since I remember (as is useful to remember): ##log 2 ~~ 0.30103## ##log 3 ~~ 0.47712125## I can calculate: ##log 12 = log (2*2*3)## ##color(white)(log 12...

  • Waiting for answer What is the order of magnitude of a football field?

    are used for comparison of measures, not for a single measure... One order of magnitude is roughly one power of ##10## in ratio. For example, the length of a football field is the...

  • Waiting for answer How do I graph the quadratic equation ##y=(x-5)^2## by plott...

    you need first to try and find the value for both x and y hence initially you set ##y=0## then solve for ##x##. lets try to expand the equation first by opening the bracket. ##y=(x-5)^2## ##Y=X^2-10X+25## SET ##Y=##0 SOLVE FOR ##X##. ##0=(X-5)(X-5)## ##X-5=0## ##X=5## ANS. for the x intercep...

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