2(2*1) = 2(2) = 4
x(x-1)(x-1)FOIL SIMPLIFY TIMES EVERYTHING IN THE BRACKETS BY X i will let you work it out
Try integration by parts, (twice, I think) with u=(x+1) and dv/dx=cosx
(p15q12)-4/3 / (p24q16)-3/4 (p15q12)-4/3 * (p24q16)3/4 p-20q-16 * p18q12 = p-2q-4 = (pq2)-2 = 1/(pq2)
I think I'm answering my own quezstion here but hey. Am I right in saying that (x+0)(x+1) Factorises to x2+ x? I think I am.
-3(2x + 1)(4 + 3x) = -3[8x + 6x2 + 4 + 3x] = -3[6x2 + 11x + 4] = -18x2 - 33x - 12.
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Let x = ea then 1/x = e-a where e is the base of natural logarithms. Then y = x + 1/x = ea + e-a So y/2 = (ea + e-a)/2 = cosh(a), the hyperbolic cosine function a = cosh-1(y/2) x= exp(cosh-1(y/2))
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(6 + 1) + 8 = 6 + (1 + 8) is the associative property of addition
Note : sin² Φ + cos² Φ = 1 for all real Φ.__________________________________Now, given that : cos² (6y) + sin² (6y) = y + 14∴ 1 = y + 14 ∴differentiating w.r.t. x, ... 0 = (dy/dx) + 0∴ dy/dx = 0 ........... Ans.___________________________________Happy To Help !___________________________________
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