2 sin x 2 cos x

Please ensure that your password is at least 8 characters and contains each of the following:. Enter a problem Calculus Examples Popular Problems. Find the second derivative.

Please ensure that your password is at least 8 characters and contains each of the following:. Enter a problem Calculus Examples Popular Problems. Divide each term in the equation by. Cancel the common factor of. Cancel the common factor. Divide by.

2 sin x 2 cos x

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To write as a fraction with a common denominatormultiply by. Calculus Examples Popular Problems.

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Solve Practice Play. Game Central. Greatest Common Factor. Least Common Multiple. Order of Operations. Mixed Fractions.

2 sin x 2 cos x

If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Search for courses, skills, and videos. Using trigonometric identities. About About this video Transcript. Created by Sal Khan. Want to join the conversation? Log in. Sort by: Top Voted. E Man.

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Consolidate the answers. Combine fractions. Add to every negative angle to get positive angles. Simplify the numerator. Enter a problem The absolute value is the distance between a number and zero. List the new angles. Simplify the left side. Split into intervals around the points that could potentially be inflection points. Move the leading negative in into the numerator. Find the points where the second derivative is. Combine fractions. The period of the function can be calculated using. Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.

In mathematics, an "identity" is an equation which is always true, regardless of the specific value of a given variable. Need a custom math course?

The absolute value is the distance between a number and zero. Divide each term in the equation by. Cancel the common factor. To find the second solution , add the reference angle from to find the solution in the fourth quadrant. Simplify the left side. Move to the left of. Replace the variable with in the expression. Rewrite the equation as. Divide by. Substitute in to find the value of.