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We look for a function whose derivative is cos 2x. We know that; d/dx (sin 2x) = 2 cos 2x or cos 2x = 1/2 d/dx (sin 2x) = d/dx (1/2 sin 2x) Therefore, an anti-derivative of cos 2x is 1/2 sin 2x.
In the following questions, four alternative given for the idiom/phrase bold in the sentence.choose the alternative which best expresses the meaning ...
To move heaven and earth
lacking physical strength, especially as a result of age or illness.
Which word or words explain the meaning of the following idioms;
out of the woods
To shorten a word/phrase/text
To bite the dust
Fill in the blank with an appropriate idiom.
The couple was __________, but they eventually got their act together.
She rejected his proposal of marriage point-blank.
...