Let →a = <−4,−2,−3> and →b= <−2,0,−5>. Find (−2→a) − (2→b).

Let →a = <−4,−2,−3> and →b= <−2,0,−5>. Find (−2→a) − (2→b).<___ , ___ , ___>

is this correct? evaluate for second derivative

i got am i right?


Physics question

In the diagram, q1 = -4.60 x 10^-6 C, 92 +3.75 x 10^-6 C, and q3 = +8.30 x 10^-5 C. Find the direction of the net force on 93.The diagram is a right triangle. Q1 is connected to Q3 (up-down) with a... more

Trigonometry and Algebra

What is the equation or function for the 1st quadrant only of a unit circle(1/4 of the circle)I know the equation for a semicircle is y=√1-x^2from the x^2+y^2=1 equation

find the area of the region bounded

find the area of the region bounded by the graph:y= 2x2-3x+2, the x-axis, and the vertical lines x=0, x=2

Find the exact value of each trigonometric ratio.

a) cos30°b) sin225°


Calculate the initial and final kinetic energy of the car in the example below.

A car of mass 12100kg is travelling at 15m/s. The driver sees that the traffic light ahead has changed to red and applies the brakes, bringing the car to a stop.A) Calculate the initial and final... more


Geometry test..

What is an equation of the line that passes through the point (4, -3) and is parallel to the line x - 2y = 2 


Geometry Test...

Which equation represents a line which is perpendicular to the line y=−1/2x−7?a) 2x+y=2 c) x−2y=6b) y−2x=4 d) x+2y=−8


What is the total charge?

The current in a circuit element varies according to the law I(t) = 1/sqrt(t) where the current I is measured in A, and time t is measured in sec. Find the total charge that has entered the element... more


Let (5, -6) be a point on the terminal side of θ. Find the exact values of cosθ, cscθ, tanθ

Exact values please (fraction form if applicable, etc.). Thank you

Consider the vector 𝑣⎯⎯⎯ v ¯ between (−2,4,−5) ( − 2 , 4 , − 5 ) and (5,−2,−4) ( 5 , − 2 , − 4 ) .

the vector v ¯ is? THE LENGTH OF v ¯ IS? if the tail of v ¯ is at (5,-1,1), then the tip is at? if the tip of v ¯ is at (0, -5, -2) then the tail is at ? what vector has the same length as v ¯ but... more

Calculus Question. Please help!

Describe the effect of each of the parameters A, B, C, and D in the most general sinusoidal equation. y = A sin (B (x + C)) + D

Express 5.6 sin ( x ) + 1.2 cos ( x ) 5.6 sin ( x ) + 1.2 cos ( x ) in the form k sin ( x + ϕ ) k sin ( x + ϕ )

Express  5.6sin(x)+1.2cos(x)  in the form  ksin(x+ϕ)K=_____ϕ= _____

Help needed. ASAP Thank YOu!

Explain how you can tell that f(x) = x3 and  are inverse functions.List two more functions that are inverses of each other.

find a vector a that has the same direction as <-8,9,8> but has a length of 3

find a vector a that has the same direction as <-8,9,8> but has a length of 3


concave up or concave down

Consider the function f(x)=6(x−5)2/3. For this function there are two important intervals: (−∞,A) and (A,∞) where  is a critical number. is   For each of the following intervals, tell... more


local minimum or local maximum

Given the function g(x)=6x3+9x2−36x, find the first derivative, g'(x).g'(x)=  Notice that g'(x)=0 when x=1, that is, g'(1)=0.Now, we want to know whether there is a local minimum or local maximum... more


local minimum and one local maximum.

The function f(x)=2x3−42x2+240x+1 has one local minimum and one local maximum.This function has a local minimum at x =   with function value   and a local maximum at x =   with function value

Exponential & Log Functions

 State the restriction(s) on the variable x in log(2x-5) – log (4 - x) 


Find all solutions of the equation in the interval [0,2π)

√3 tanθ +1 = 0 Write your answer in radians in terms of π.If there is more than one solution, separate them with commas.

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