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Expand the integral $\int\left(-\cos\left(3x\right)+7\sin\left(4x\right)\right)dx$ into $2$ integrals using the sum rule for integrals, to then solve each integral separately
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$\int-\cos\left(3x\right)dx+\int7\sin\left(4x\right)dx$
Learn how to solve trigonometric integrals problems step by step online. Solve the trigonometric integral int(-cos(3x)+7sin(4x))dx. Expand the integral \int\left(-\cos\left(3x\right)+7\sin\left(4x\right)\right)dx into 2 integrals using the sum rule for integrals, to then solve each integral separately. The integral \int-\cos\left(3x\right)dx results in: -\frac{1}{3}\sin\left(3x\right). The integral \int7\sin\left(4x\right)dx results in: -\frac{7}{4}\cos\left(4x\right). Gather the results of all integrals.