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Simplifying f(x) = 4x(cos(5x)) Multiply f * x fx = 4x(cos(5x)) Remove parenthesis around (5x) fx = 4x(cos * 5x) Reorder the terms for easier multiplication: fx = 4x(5cos * x) Multiply cos * x fx = 4x(5cosx) Remove parenthesis around (5cosx) fx = 4x * 5cosx Reorder the terms for easier multiplication: fx = 4 * 5x * cosx Multiply 4 * 5 fx = 20x * cosx Multiply x * cosx fx = 20cosx2 Solving fx = 20cosx2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = 20cosx Simplifying f = 20cosx
| 8n+5=4n-11 | | p=5x-4y+3z | | 2Y+X+21=0 | | y/5=-5.5 | | 12x-6=3(3x+4) | | a(n)=7+(n-1)3 | | -10h-6=-2over-5 | | -36+8x=2(2+8x) | | 4u+16=7u+1 | | 35y^2-2y+2= | | x^2+15x^2= | | 3b^2+12b+12=0 | | 9+21y= | | 21y+10=28 | | 35=4x+15 | | 150+(3x-15)=180 | | 4n-6=8 | | X+2Y+21=0 | | 8+2=30 | | 4y=y+33 | | 0=x^2+6x+17 | | -4(8x+43)-18x=4x-13(2-18) | | 2(y+2)=12 | | 0=2x^2-16x+38 | | 36=.5(x*2x) | | 44=2(3w+w) | | x^3-5x^2+3x-5x-6= | | 9+x=93 | | 2.4=x+3.7 | | 4(d+6)= | | 890/2 | | -3x^3+10x^2-3x=0 |