| અંતરાલ | $f^{\prime}(x)$ ની નિશાની | વિધેયનો પ્રકાર |
| $[0, \frac{\pi}{4})$ | $f^{\prime}(x) > 0$ | $f$ વધતું વિધેય છે |
| $(\frac{\pi}{4}, \frac{5 \pi}{4})$ | $f^{\prime}(x) < 0$ | $f$ ઘટતું વિધેય છે |
| $(\frac{5 \pi}{4}, 2 \pi]$ | $f^{\prime}(x) > 0$ | $f$ વધતું વિધેય છે |
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