Solution

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Solution

Solution steps
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Rewrite using trig identities
Use the basic trigonometric identity:

Popular Examples

(d^2)/(dx^2)(({f}(x))(-3x^2+2x))((5x^2-25x+28))/((x^2(x-7)))expand 3(e^2-1)expand join 2sin(pi/4 (x-3))+4join expand (dz)/((z^2+4)^2)expand

Frequently Asked Questions (FAQ)

  • What is expand cos((n+2)pi) ?

    The solution to expand cos((n+2)pi) is (-1)^n