# Pre- Calculus

21,321 results, page 3

### pre calculus

verify functions f and g are inverses of each other by showing that f(g(x)) = x and g(f(x)) = x. f(x)= 5/(2 -x) g (x) = 2 - 5/x

### pre-calculus

solve equation show work. log_2(x^2+47)=7

### Pre-calculus

If cosx=4/5, cosy=12/13 in Quad. IV, find sin(x+y)

### Pre-calculus

If cosx=4/5, cosy=12/13 in Quad. IV, find sin(x+y)

### pre-calculus

PD= 600(0.978)^t PD is decreasing at 2.2% per year. How did they get 2.2%

### Pre calculus

finding equations for the hyperbola whose graph is F(0,13) and F(0,-13)

### pre calculus

Name 3 different representations of the following (-6, 3pi/4)

### pre calculus

solve the following inequality 4x-3/x+4 less than or equal too 3

### pre calculus

find the real zeros of f(x)=x^4+6x^3-11x^2-24x+28

### Pre-Calculus

-5x divided by x, how come that equals -5, but not -5x, how do the x's cancel out?

### pre-calculus

for the function f defined by: (x)=3x^2+3x+2;find the following values. a. f(-1)= b. f(-x)= c. -f(x)= d. f(x+h)=

### pre-calculus

analyze the graph of the function r(x)= 13x + 13 ________ 5x + 15

### Pre Calculus

Write the Rectangular Form of the Polar Equation: r=12

### pre-calculus

let f(x)=x^2 -(a^2 + 2a)x + 2a^3, where 0<a<2. for which value of a will the distance between the x-ints. of f be a maximum?

### Pre-calculus

fraction 1) 5/12+7/18-5/6 2) 3x/x-1-1/x=_____/x^2-1x 3) x+1/x^2-5x+6-3x+11/x^2-x-6= 4)2x^2-3x-1 5) 3x^2+2x-2 6) x^2-3x-9 4-5 with formula -B+_sqrt(B)^2+(-4)(A)(C)/2A please help!

### Pre-Calculus

How would I write this in exponential form? log(3)1/27= -3

### Pre-Calculus

Could someone check my answers? 27. (16/9)^2/3 = 64/27 28. (49/25)^3/2 = 343/125 31. (-64)^2/3 = 8 32. (-8)^-4/3 = 1/16 or -1/16

### pre calculus

Choose the point on the terminal side of 135°

### Pre-Calculus

Express tan(t) in terms of cos(t), where t is in Quadrant 3

### Math (pre calculus)

Solve 2^3-x = 5^2x+1 Give an exact solution.

### Pre Calculus

Find the exact value of sin(1/2arcsin(-7/25))

### Pre Calculus

Write the rectangular equation in polar form... x=3

### pre calculus

4+7i divided by 2 (problem is written as a fraction) 4+7i _________ 2

### Pre Calculus

Solve the inequality sinx>square root x.

### Pre-Calculus

Help please What is the slope of the line x = 4? would it be undefined??

### Pre-Calculus

Prove the identity: cos(x-π/2)=sin x

### Pre-Calculus

How do you solve the equation(800+x)tan33=xtan35?

### Pre - CALCULUS

Use Cramer's rule to solve the system. 2x + 4y - z = 32 x - 2y + 2z = -5 5x + y + z = 20 A. {( 1, -9, -6)} B. {( 2, 7, 6)} C. {( 9, 6, 9)} D. {( 1, 9, 6)} d ?

### Pre-Calculus

Parabolas; find Vertex, focus, directrix? 1) (y+1)^2 = -4(x-2)

### math: pre-calculus

Write the expression as a single logarithm. Ln(e^3y)+ln(ey)-4

### pre-calculus

Choose the point on the terminal side of -210°.

### Pre-calculus

Find the acute angle between the lines 2x-3y-6=0 and x+5y-20=0

### Pre-calculus

Evaluate sin16° cos29° + cos16° sin29°

### pre calculus

Use the following vectors to answer the question. u: <-1,7> v: <6,4> What is ||u||2?

### pre calculus

Use the following vectors to answer the question. u: <-1,7> v: <6,4> What is ||v||2?

### pre calculus

can you please explain what steps you take to find ||u||2 when u: <-1,7> v: <6,4>?

### pre calculus

Write the complex number z=-2+2i in trigonometric form.

### Pre-calculus

Convert cartesian equation to polar form 1. x^2+y^2=4x 2. (x^2+y^2)^2=6(x^2-y^2)

### pre calculus

Find the equation of a Parabola with Vertex: (2,-1) and directrix: x= -2

### pre calculus

what is the distance between the pole and the directrix of r = 4/-2-6sintheta

### Pre-Calculus 12

Solve the polynomial equation. 2x^3 - 13x^2 + 32x - 13 = 0

### Pre-calculus

Parabola x^2+10x+4y29=0 in standard form

### Pre calculus

write the finite series -1+2+7+14+23+...+62 in summation notation

### Pre-calculus

How do I factor this: 6m^2 + 7mn + n^2 I really don't understand this one

### Pre-Calculus

True or false: P varies directly as Q can be written as P = kQ.

### Pre-Calculus

rewrite using radicals and rational numbers Cos 3(pi)/8

### Pre-Calculus

How do you confirm that f and g are inverses by showing that f(g(x))=x and g(f(x))=x ? Problem: f(x)=3x-2 and g(x)= x+2 --- 3 Please help, don't know where to begin?

### Pre-Calculus

If: f(x)= radical x g(x)= x^2+1 What is the domain of f o g? I don't really understand how to answer this question.

### Pre Calculus

please explain the process of finding the complex zeros of f(x)=x^4+5x^2+4.

### Pre-Calculus

Solve the equation over the interval [0,2π) 4csc^2+1 = 0

### Pre Calculus

find the real zeros of the polynomial: P(x) = 24x^3 - 76x^2 + 2

### pre calculus

find an equation of the line that passes through the points (0,0),(-1,5) and (2,1),(0,-3)

### Pre Calculus

find all exact real solutions of the equation. x^4-2x^2-24=0

### pre-calculus

one solution of x^3-5x^2+5x-1=0 is 1. find the other two solutions.

### pre calculus

9x^2 + 16y^2 - 36x + 96y + 36 = 0 how do i find the domain to this problem?

### pre calculus

9x^2 + 16y^2 - 36x + 96y + 36 = 0 How do i find the major axis?

### Pre Calculus

Establish the following identity Sin2x/1+cos2x=tanx

### Pre Calculus

Prove that 2/square root 3cosx-sinx=sec(pi/6-x)

### pre-calculus

If (1)(2) + (2)(3) + ... n(n+1) = n(n+1)(n+2)/3 complete the inductive step of its proof: 1(2) + 2(3) + ... k(k+1) + (k+1)(k+2) I have no idea what to do.

### Pre-Calculus

Solve the equation by finding the square root. 4u2 + 4u + 1 = 75

### Pre Calculus

Verify the identity: cos x + sin x tan x = sec x.

### Pre Calculus

use the sum of difference formula what is sin(pi/2-5pi/3)?

### Pre calculus

find the domain of the given function f(x)=square root 9-x

### pre calculus

Write the expression below as a single logarithm. 2in(x+4)-in((x^(2)+x-12)/(x))

### Pre-Calculus

Need help with the following along with all steps. Find y" for y = 3x + 4/x

### Pre-calculus

How do I convert theta = 45 degrees Into a rectangular equation?

### pre-calculus

tanx= -12/5 x in quadrant 2 find; sin2x= cos2x= tan2x=

### Pre-Calculus

How many terms of the series -6+0+6+12+... are needed to yield a sum of 324?

### Pre-Calculus

How many terms of the series 12+4+4/3+4/9+..., are needed to yield a sum of 1459/81?

### Pre-Calculus

I need help sketching the graph of a piecewise function. f(x) = { x² if |x|≤1, -x² if |x|>1

### pre-calculus

write the expression as a simple logarithm. express powers. In(x/x-5)+In(x+5/x)-In(x^2-25)

### Pre-Calculus

Determine the number of triangles that can be formed with the given information. a=1, b=5, c=4

### Pre-Calculus

Determine the number of triangles that can be formed with the given information. a=1, b=5, c=4

### Pre-Calculus

Determine the number of triangles that can be formed with the given information. a=1, b=5, c=4

### Pre-Calculus

Determine the number of triangles that can be formed with the given information. a=1, b=5, c=4

### Pre-Calculus

I'm having trouble with this problem because I'm not sure what to do with the 1.. 21. (x-5)^2+(y+2)^2=1 (x-(5))^2+(y+2)^2= ???? center= (5,2) radius= ???

### Pre-Calculus

Write an algebraic expression in x for sec(arcsin(x/sqrt(x^(2) +4)))

### Pre-Calculus

Here is correct question: Solve sin (pi/4*(x-6))=0.5, 0<x<360

### Pre-Calculus

Write the polar equation in rectangular form... r=5sintheta

### Pre-Calculus

Express the complex number in polar form. 5-12i

### Pre calculus

P=(-2,2) Q=(3,4) S=(2,-8) PS-3PQ Find the component form and magnitude of the vector.

### pre calculus

determine whether the equation defines y as a function of x. √x + y = 12

### pre calculus

Find a cubic function with the given zeros. -2, 5, -6 help me please

### Pre-Calculus/Trigonometry

Help me please, just explain. How would I find f(1)? f(1)= x; -3, -2, -1, 0, 1, 2 f(x); 3.4, 0, -1.2, 0.4, 1.3, 1.7

### Pre-Calculus

Find all solutions of the equation and express them in the form a+bi 2x^2+3=2x

### college pre-calculus

simplify: 6-y/6/1/6-1/y 6-y/6*6y/y-6= 6y/6=y Is this correct help i need help!! answers: A. -y B. y C. -6/y D. -1/y which one?

### PRE - CALCULUS

Solve the quadratic equation by the square root property. (2x + 5)2 = 49 A. {-6, 1} B. {0, 1} C. {-27, 27} D. {1, 6} d?

### pre - CALCULUS

Verify the identity. Show your work. (1 + tan2u)(1 - sin2u) = 1

### Pre - CALCULUS

Locate the foci of the ellipse. Show your work. 𝑥2/36+ y2/11=1

### Pre - CALCULUS

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0

### pre - CALCULUS

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0

### Pre-Calculus

how do i find the vertical asymptote of x−1 / x(x-2) so far i got x-1 / x^2-2x

### Pre-calculus/ trig

Given the vectors a= (-1,9) and b= (4,2) explain the difference between a-b and b-a. Thank you for your help! :)

### Pre Calculus

Evaluate the function f(x) = log3 x at x =1/27 without using a calculator a. –4 b. –2 c. 1/27 d. –3 e. 27

### pre calculus

how long will it take for an investment to triple if it is compounded continuously at 4.2%

### Pre-calculus

If sin2x=7/25, siny=-2/sq root of 13, cot y>0, and -pi/4<x<pi/4, find sin(2y-a)

### pre calculus

how do you use e^a+bi = e^(cos b + i sin b) to derive the equation eπi + 1 = 0

### Pre-Calculus

Given: r = 4/(-2-6sinθ) What is the distance between the pole and the directrix? A. 2 B.2/3 C.3 D.6

### pre calculus

use matrices to solve the system of equations , if possible. 2x+y+2z=4 2x+2y=5 2x-y+6z=2