Saturday

December 20, 2014

December 20, 2014

Posted by **Yulieth** on Sunday, November 20, 2011 at 11:13pm.

sin(θ-5π/3)

sin2θ

cos2θ

cos(θ/2)

can some1 please help me?

- trigonometry -
**ObAKdoOxiVOGYmQx**, Sunday, May 6, 2012 at 9:11pmSolution:Step1First replace x with (x-Δx) in the given funicton f(x) to obtainf(x+Δx) = 2(x+Δx)+1 = 2x + 2Δx + 1 Step2Rewrite f(x-Δx) as (2x + 2Δx + 1) and f(x) as (2x + 1) into the definition of the derivative limit to obtain: lim [(2x + 2Δx + 1) - (2x+1)] / ΔxΔx-> 0 Step 3Combine like terms on the numerator and the reduced expression becomes lim [2Δx] / ΔxΔx-> 0 Step 4Cancel out Δx from both numerator and denominator and finally you get the derivative Derivative of f (x) = 2x+1 = 2 -Note there was no need to substitute Δx with 0 since it was canceled out.

**Answer this Question**

**Related Questions**

math - if cosθ=2/3 and tanθ<0 find the exact value sin(θ-5&#...

Math - Calculus - The identity below is significant because it relates 3 ...

trigonometry - given tanθ= -2√10/3 and π/2<θ< π ...

Trigonometry - Which of the following is equivalent to 1 − cos 2 θ/...

trigonometry - tanθ= -2sqrt10/3 and π/2<θ< π find a. ...

trig - cosθ =5/13 with -π/2 < θ <0 find each of the ...

Pre-Calculus - If θ represents an angle such that sin2θ = tanθ - ...

Math - 1. Find the exact value of 2tan pi/12 / 1-tan^2 pi/12 root 3/3? 2. Given ...

Trig - Given that csc θ = -4 and tan θ > 0, find the exact value of...

Trigonometry - Could someone please help me with the following q's I'm having ...