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precalulus

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Precalulus-NEED HELP!
PLEASE HELP! Compute the difference quotient: [(f(x)- f(a))/(x-a)].. for f(x)= (-1/x^2)

precalulus
y^2+4y-x+1=0 what is the vertex of this equation and the axis of symmetry for this parabola?

Precalulus
Kindly help with this question. Thanks. Solve the following equation for x. -2/-3x - 7 - 3/2x - 1 = 3/2

precalulus
use the intermediate value theorem to show that f(x) has a zero in the given interval. f(x) = -x^5 -2x^4 + 5x^3 + 4; [-0.9, -0.8] Stuck!

precalulus
Change the exponentional expression to an equivalent expression involving a logarithm. 7^c = 0.026

precalulus
Ok feeling kinda dumb because this isn't coming out right. I know it's simple. log6 (x -3) + log6(x -6) - log6(x + 1) = 2

math- precalulus
Can someone help me with this prolem please? Use the information given about the angle Ɵ to find the exact value of: sin 2Ɵ. 1) sinƟ= 3/5, 0 < Ɵ < (π/2)

precalulus
a ship travels 60 miles due east, then adjusts its course northward. after travelling 80 miles in the new direction, the ship is 139 miles from its point of departure. calculate the ship's bearing.

proof by mathematical induction
subject is PreCalulus. 2^(k+3) = and < (k+3)! i know how to do proving using mathematical induction when its just an equal sign, but I don't understand what to do when its an inequality. thank you!!! Here is what I would do Step 1: check if it is true for k=1 that is: let k...

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